# MWorks client error **URL:** \ **Category:** Support\ **Created:** [August 13, 2024, 10:15pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017 "2024-08-13T22:15:03Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![hokysung](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@hokysung](https://mworks.discourse.group/u/hokysung)\ **Post date:** [August 13, 2024, 10:15pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/1 "2024-08-13T22:15:03Z")
Hi Chris, I’ve been observing an error where MWClient crashes as soon as I open Eye Window when I’m connected to a remote MWServer. This started to happen a few days ago, before that the Eye Window would open fine. ## The following is the full error message: ‘’’ ## Translated Report (Full Report Below) Process: MWClient [41626] Path: /Applications/MWClient.app/Contents/MacOS/MWClient Identifier: org.mworks-project.MWClient Version: 0.13 (2024.05.01) Code Type: X86-64 (Native) Parent Process: launchd [1] User ID: 501 Date/Time: 2024-08-12 17:15:14.1548 -0400 OS Version: macOS 14.6.1 (23G93) Report Version: 12 Bridge OS Version: 8.6 (21P6074) Anonymous UUID: C49BD9B4-C7C5-7E02-55AC-0EFA23ACAEF2 Sleep/Wake UUID: C87A4F72-98A0-4D6B-9A01-DD1922FAB852 Time Awake Since Boot: 140000 seconds Time Since Wake: 1642 seconds System Integrity Protection: enabled Crashed Thread: 0 Exception Type: EXC\_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6 Terminating Process: MWClient [41626] Application Specific Information: abort() called Kernel Triage: VM - (arg = 0x3) mach\_vm\_allocate\_kernel failed within call to vm\_map\_enter VM - (arg = 0x3) mach\_vm\_allocate\_kernel failed within call to vm\_map\_enter VM - (arg = 0x3) mach\_vm\_allocate\_kernel failed within call to vm\_map\_enter Thread 0 Crashed: 0 libsystem\_kernel.dylib 0x7ff80442ddb6 \_\_pthread\_kill + 10 1 libsystem\_pthread.dylib 0x7ff804466ebd pthread\_kill + 262 2 libsystem\_c.dylib 0x7ff80438ca79 abort + 126 3 libc++abi.dylib 0x7ff80441f922 abort\_message + 241 4 libc++abi.dylib 0x7ff80441212a demangling\_terminate\_handler() + 266 5 libobjc.A.dylib 0x7ff8040aeb4a \_objc\_terminate() + 96 6 libc++abi.dylib 0x7ff80441ed7b std::\_\_terminate(void (_)()) + 6 7 libc++abi.dylib 0x7ff80441ed36 std::terminate() + 54 8 libdispatch.dylib 0x7ff8042c5dd0 \_dispatch\_client\_callout + 28 9 libdispatch.dylib 0x7ff8042d2d3c \_dispatch\_lane\_barrier\_sync\_invoke\_and\_complete + 60 10 MWorksEyeWindow 0x104fe15a0 -[MWTimePlotView drawRect:] + 368 11 AppKit 0x7ff807cfe19c \_NSViewDrawRect + 121 12 AppKit 0x7ff8087b8f27 -[NSView \_recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:] + 1848 13 AppKit 0x7ff807cfda5a -[NSView(NSLayerKitGlue) \_drawViewBackingLayer:inContext:drawingHandler:] + 747 14 AppKit 0x7ff8082d8110 -[NSViewBackingLayer drawInContext:] + 64 15 AppKit 0x7ff807fefda1 0x7ff807b73000 + 4705697 16 AppKit 0x7ff808010600 0x7ff807b73000 + 4838912 17 AppKit 0x7ff807fc312d 0x7ff807b73000 + 4522285 18 AppKit 0x7ff80801010c 0x7ff807b73000 + 4837644 19 AppKit 0x7ff80800d816 0x7ff807b73000 + 4827158 20 AppKit 0x7ff807fef869 0x7ff807b73000 + 4704361 21 AppKit 0x7ff807fefdeb 0x7ff807b73000 + 4705771 22 AppKit 0x7ff8082d7d50 -[NSViewBackingLayer display] + 1763 23 QuartzCore 0x7ff80cb49361 CA::Layer::display\_if\_needed(CA::Transaction_) + 867 24 QuartzCore 0x7ff80cce1400 CA::Context::commit\_transaction(CA::Transaction\*, double, double\*) + 758 25 QuartzCore 0x7ff80cb2a1a9 CA::Transaction::commit() + 725 26 AppKit 0x7ff807d0ea7d \_\_62+[CATransaction(NSCATransaction) NS\_setFlushesWithDisplayLink]\_block\_invoke + 285 27 AppKit 0x7ff8087ff854 \_\_\_NSRunLoopObserverCreateWithHandler\_block\_invoke + 41 28 CoreFoundation 0x7ff804543586 **CFRUNLOOP\_IS\_CALLING\_OUT\_TO\_AN\_OBSERVER\_CALLBACK\_FUNCTION** + 23 29 CoreFoundation 0x7ff8045434aa \_\_CFRunLoopDoObservers + 493 30 CoreFoundation 0x7ff804542a2c \_\_CFRunLoopRun + 850 31 CoreFoundation 0x7ff804542112 CFRunLoopRunSpecific + 557 32 HIToolbox 0x7ff80ef61a09 RunCurrentEventLoopInMode + 292 33 HIToolbox 0x7ff80ef61646 ReceiveNextEventCommon + 201 34 HIToolbox 0x7ff80ef61561 \_BlockUntilNextEventMatchingListInModeWithFilter + 66 35 AppKit 0x7ff807bb2171 \_DPSNextEvent + 880 36 AppKit 0x7ff8084c6af0 -[NSApplication(NSEventRouting) \_nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1273 37 AppKit 0x7ff807ba3585 -[NSApplication run] + 603 38 AppKit 0x7ff807b774f3 NSApplicationMain + 816 39 MWClient 0x104af0fdf main + 111 40 dyld 0x7ff8040db345 start + 1909 Thread 1: 0 libsystem\_kernel.dylib 0x7ff804429c3a \_\_psynch\_cvwait + 10 1 libsystem\_pthread.dylib 0x7ff8044676f3 \_pthread\_cond\_wait + 1211 2 libc++.1.dylib 0x7ff8043a0d9b std::\_\_1::condition\_variable::\_\_do\_timed\_wait(std::\_\_1::unique\_lockstd::\_\_1::mutex&, std::\_\_1::chrono::time\_point\\>\>) + 93 3 MWorksCore 0x1061bdb2d mw::Event::getNextEvent(long long) const + 125 4 MWorksCore 0x10622e44d mw::EventBufferReader::getNextEvent(long long) + 29 5 MWorksCore 0x1062888c8 mw::EventListener::service() + 88 6 MWorksCore 0x106288a02 void\* std::\_\_1::\_\_thread\_proxy[abi:ue170006]\, mw::EventListener::startListener()::$\_0\>\>(void\*) + 50 7 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 8 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 2:: com.apple.NSEventThread 0 libsystem\_kernel.dylib 0x7ff80442708e mach\_msg2\_trap + 10 1 libsystem\_kernel.dylib 0x7ff804435878 mach\_msg2\_internal + 84 2 libsystem\_kernel.dylib 0x7ff80442e178 mach\_msg\_overwrite + 653 3 libsystem\_kernel.dylib 0x7ff80442737d mach\_msg + 19 4 CoreFoundation 0x7ff8045441c5 \_\_CFRunLoopServiceMachPort + 143 5 CoreFoundation 0x7ff804542c35 \_\_CFRunLoopRun + 1371 6 CoreFoundation 0x7ff804542112 CFRunLoopRunSpecific + 557 7 AppKit 0x7ff807d1029c \_NSEventThread + 122 8 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 9 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 3:: _/Reaper 0 libsystem\_kernel.dylib 0x7ff80442bd6e kevent + 10 1 MWorksCore 0x1064b99d5 zmq::kqueue\_t::loop() + 213 (kqueue.cpp:163) 2 MWorksCore 0x1064e9e1d thread\_routine(void_) + 61 (thread.cpp:229) 3 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 4 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 4:: _/0 0 libsystem\_kernel.dylib 0x7ff80442bd6e kevent + 10 1 MWorksCore 0x1064b99d5 zmq::kqueue\_t::loop() + 213 (kqueue.cpp:163) 2 MWorksCore 0x1064e9e1d thread\_routine(void_) + 61 (thread.cpp:229) 3 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 4 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 5: 0 libsystem\_kernel.dylib 0x7ff80442de5e poll + 10 1 MWorksCore 0x1064d72db zmq::signaler\_t::wait(int) const + 59 (signaler.cpp:219) 2 MWorksCore 0x1064ba843 zmq::mailbox\_t::recv(zmq::command\_t\*, int) + 67 (mailbox.cpp:54) 3 MWorksCore 0x1064d943f zmq::socket\_base\_t::process\_commands(int, bool) + 47 (socket\_base.cpp:1478) 4 MWorksCore 0x1064dc596 zmq::socket\_base\_t::recv(zmq::msg\_t\*, int) + 406 (socket\_base.cpp:1363) 5 MWorksCore 0x1064f76a2 s\_recvmsg(zmq::socket\_base\_t\*, zmq\_msg\_t\*, int) + 14 (zmq.cpp:471) [inlined] 6 MWorksCore 0x1064f76a2 zmq\_msg\_recv + 50 (zmq.cpp:622) 7 MWorksCore 0x10630b7dd mw::ZeroMQSocket::Message::recv(mw::ZeroMQSocket&, int) + 45 8 MWorksCore 0x10630c3d2 mw::ZeroMQSocket::recv(mworks\_boost::shared\_ptrmw::Event&) + 114 9 MWorksCore 0x1062f8ecf mw::ZeroMQIncomingConnectionBase::handleNextEvent() + 31 10 MWorksCore 0x1062f93c0 void\* std::\_\_1::\_\_thread\_proxy[abi:ue170006]\, mw::ZeroMQIncomingConnectionBase::startEventHandlerThread()::$\_0\>\>(void\*) + 64 11 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 12 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 6: 0 libsystem\_kernel.dylib 0x7ff804429c3a \_\_psynch\_cvwait + 10 1 libsystem\_pthread.dylib 0x7ff8044676f3 \_pthread\_cond\_wait + 1211 2 libc++.1.dylib 0x7ff8043a0d9b std::\_\_1::condition\_variable::\_\_do\_timed\_wait(std::\_\_1::unique\_lockstd::\_\_1::mutex&, std::\_\_1::chrono::time\_point\\>\>) + 93 3 MWorksCore 0x1061bdb2d mw::Event::getNextEvent(long long) const + 125 4 MWorksCore 0x10622e44d mw::EventBufferReader::getNextEvent(long long) + 29 5 MWorksCore 0x1062f9226 mw::ZeroMQOutgoingConnectionBase::handleEvents() + 86 6 MWorksCore 0x1062f94a2 void\* std::\_\_1::\_\_thread\_proxy[abi:ue170006]\, mw::ZeroMQOutgoingConnectionBase::startEventHandlerThread()::$\_1\>\>(void\*) + 50 7 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 8 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 7: 0 libsystem\_pthread.dylib 0x7ff804462ac0 start\_wqthread + 0 Thread 8: 0 libsystem\_pthread.dylib 0x7ff804462ac0 start\_wqthread + 0 Thread 9: 0 libsystem\_pthread.dylib 0x7ff804462ac0 start\_wqthread + 0 Thread 10: 0 libsystem\_pthread.dylib 0x7ff804462ac0 start\_wqthread + 0 Thread 11: 0 libsystem\_pthread.dylib 0x7ff804462ac0 start\_wqthread + 0 Thread 12: 0 libsystem\_kernel.dylib 0x7ff804429c3a \_\_psynch\_cvwait + 10 1 libsystem\_pthread.dylib 0x7ff8044676f3 \_pthread\_cond\_wait + 1211 2 libc++.1.dylib 0x7ff8043a0d9b std::\_\_1::condition\_variable::\_\_do\_timed\_wait(std::\_\_1::unique\_lockstd::\_\_1::mutex&, std::\_\_1::chrono::time\_point\\>\>) + 93 3 MWorksCore 0x1061bdb2d mw::Event::getNextEvent(long long) const + 125 4 MWorksCore 0x10622e44d mw::EventBufferReader::getNextEvent(long long) + 29 5 MWorksCore 0x1062888c8 mw::EventListener::service() + 88 6 MWorksCore 0x106288a02 void\* std::\_\_1::\_\_thread\_proxy[abi:ue170006]\, mw::EventListener::startListener()::$\_0\>\>(void\*) + 50 7 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 8 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 13: 0 libsystem\_kernel.dylib 0x7ff80442de5e poll + 10 1 MWorksCore 0x1064d72db zmq::signaler\_t::wait(int) const + 59 (signaler.cpp:219) 2 MWorksCore 0x1064ba843 zmq::mailbox\_t::recv(zmq::command\_t\*, int) + 67 (mailbox.cpp:54) 3 MWorksCore 0x1064d948e zmq::socket\_base\_t::process\_commands(int, bool) + 126 (socket\_base.cpp:1488) 4 MWorksCore 0x1064dc596 zmq::socket\_base\_t::recv(zmq::msg\_t\*, int) + 406 (socket\_base.cpp:1363) 5 MWorksCore 0x1064f76a2 s\_recvmsg(zmq::socket\_base\_t\*, zmq\_msg\_t\*, int) + 14 (zmq.cpp:471) [inlined] 6 MWorksCore 0x1064f76a2 zmq\_msg\_recv + 50 (zmq.cpp:622) 7 MWorksCore 0x10630b7dd mw::ZeroMQSocket::Message::recv(mw::ZeroMQSocket&, int) + 45 8 MWorksCore 0x10630c3d2 mw::ZeroMQSocket::recv(mworks\_boost::shared\_ptrmw::Event&) + 114 9 MWorksCore 0x1062f8ecf mw::ZeroMQIncomingConnectionBase::handleNextEvent() + 31 10 MWorksCore 0x1062f93c0 void\* std::\_\_1::\_\_thread\_proxy[abi:ue170006]\, mw::ZeroMQIncomingConnectionBase::startEventHandlerThread()::$\_0\>\>(void\*) + 64 11 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 12 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 14: 0 libsystem\_kernel.dylib 0x7ff804429c3a \_\_psynch\_cvwait + 10 1 libsystem\_pthread.dylib 0x7ff8044676f3 \_pthread\_cond\_wait + 1211 2 libc++.1.dylib 0x7ff8043a0d9b std::\_\_1::condition\_variable::\_\_do\_timed\_wait(std::\_\_1::unique\_lockstd::\_\_1::mutex&, std::\_\_1::chrono::time\_point\\>\>) + 93 3 MWorksCore 0x1061bdb2d mw::Event::getNextEvent(long long) const + 125 4 MWorksCore 0x10622e44d mw::EventBufferReader::getNextEvent(long long) + 29 5 MWorksCore 0x1062f9226 mw::ZeroMQOutgoingConnectionBase::handleEvents() + 86 6 MWorksCore 0x1062f94a2 void\* std::\_\_1::\_\_thread\_proxy[abi:ue170006]\, mw::ZeroMQOutgoingConnectionBase::startEventHandlerThread()::$\_1\>\>(void\*) + 50 7 libsystem\_pthread.dylib 0x7ff80446718b \_pthread\_start + 99 8 libsystem\_pthread.dylib 0x7ff804462ae3 thread\_start + 15 Thread 0 crashed with X86 Thread State (64-bit): rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x00007ff7bb40b5c8 rdx: 0x0000000000000000 rdi: 0x0000000000000103 rsi: 0x0000000000000006 rbp: 0x00007ff7bb40b5f0 rsp: 0x00007ff7bb40b5c8 r8: 0x00007ff7bb40b490 r9: 0x00007ff7bb40b6f0 r10: 0x0000000000000000 r11: 0x0000000000000246 r12: 0x0000000000000103 r13: 0x0000003000000008 r14: 0x00007ff8479aadc0 r15: 0x0000000000000016 rip: 0x00007ff80442ddb6 rfl: 0x0000000000000246 cr2: 0x0000000000000000 Logical CPU: 0 Error Code: 0x02000148 Trap Number: 133 Binary Images: 0x10608e000 - 0x106095fff org.mworks-project.MWorksBehavioralWindow (_) \<1f3d4218-58c7-3ec5-825b-51024fd5ba92\> /Library/Application Support/MWorks/_/MWorksBehavioralWindow.bundle/Contents/MacOS/MWorksBehavioralWindow 0x1050c0000 - 0x1050ccfff Narrative (Narrative version 0.1.0) \<962bb84f-ac2a-3d95-b296-d818c10aad0f\> /Library/Application Support/MWorks/_/MWorksBehavioralWindow.bundle/Contents/Frameworks/Narrative.framework/Versions/A/Narrative 0x106075000 - 0x10607bfff org.mworks-project.ImageViewer (1.0) /Library/Application Support/MWorks/_/ImageViewer.bundle/Contents/MacOS/ImageViewer 0x106063000 - 0x106066fff org.mworks-project.MWorksRewardWindow (1.0) /Library/Application Support/MWorks/_/MWorksRewardWindow.bundle/Contents/MacOS/MWorksRewardWindow 0x104fd9000 - 0x104fe7fff edu.mit.dicarlolab.MWorksEyeWindow (_) \<0a6db0b1-95b4-3abd-84e9-d7aad014319f\> /Library/Application Support/MWorks/_/MWorksEyeWindow.bundle/Contents/MacOS/MWorksEyeWindow 0x104f89000 - 0x104f8ffff edu.mit.dicarlolab.CalibratorWindow (_) /Library/Application Support/MWorks/_/CalibratorWindow.bundle/Contents/MacOS/CalibratorWindow 0x104f6c000 - 0x104f75fff org.mworks-project.MWorksVariablesWindow (_) /Library/Application Support/MWorks/_/MWorksVariablesWindow.bundle/Contents/MacOS/MWorksVariablesWindow 0x104fa7000 - 0x104fadfff org.mworks-project.PythonBridgePlugin (1.0) /Library/Application Support/MWorks/_/PythonBridgePlugin.bundle/Contents/MacOS/PythonBridgePlugin 0x104db9000 - 0x104dc5fff libobjc-trampolines.dylib (_) /usr/lib/libobjc-trampolines.dylib 0x104bc7000 - 0x104bccfff org.mworks-project.LowPrioritySchedulerPlugin (_) /Library/Application Support/MWorks/_/LowPrioritySchedulerPlugin.bundle/Contents/MacOS/LowPrioritySchedulerPlugin 0x104bec000 - 0x104bfafff org.mworks-project.HighPrecisionClock (1.0) \<658339dc-1322-3518-b61f-f2e78b22cc35\> /Library/Application Support/MWorks/_/HighPrecisionClock.bundle/Contents/MacOS/HighPrecisionClock 0x105001000 - 0x10501afff org.mworks-project.MWorksCocoa (_) /Library/Application Support/MWorks/_/MWorksCocoa.framework/Versions/A/MWorksCocoa 0x10504e000 - 0x105077fff org.mworks-project.MWorksSwift (1.0) /Library/Application Support/MWorks/_/MWorksSwift.framework/Versions/A/MWorksSwift 0x106150000 - 0x1065bdfff org.mworks-project.MWorksCore (0.13) \<2971b697-7a76-3ef7-b524-bc4c6212627e\> /Library/Application Support/MWorks/_/MWorksCore.framework/Versions/A/MWorksCore 0x104af0000 - 0x104afdfff org.mworks-project.MWClient (0.13) /Applications/MWClient.app/Contents/MacOS/MWClient 0x7ff804426000 - 0x7ff804460ff7 libsystem\_kernel.dylib (_) \<54b50613-cc4b-3ace-a9ec-919ea83d5e5f\> /usr/lib/system/libsystem\_kernel.dylib 0x7ff804461000 - 0x7ff80446cff7 libsystem\_pthread.dylib (_) /usr/lib/system/libsystem\_pthread.dylib 0x7ff80430d000 - 0x7ff804394ff7 libsystem\_c.dylib (_) /usr/lib/system/libsystem\_c.dylib 0x7ff804410000 - 0x7ff804425fff libc++abi.dylib (_) /usr/lib/libc++abi.dylib 0x7ff804093000 - 0x7ff8040d4fc3 libobjc.A.dylib (_) /usr/lib/libobjc.A.dylib 0x7ff8042c3000 - 0x7ff804309ff1 libdispatch.dylib (_) /usr/lib/system/libdispatch.dylib 0x7ff807b73000 - 0x7ff808fa3ff7 com.apple.AppKit (6.9) /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit 0x7ff80cb28000 - 0x7ff80ceb2ffd com.apple.QuartzCore (1.11) /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore 0x7ff8044c8000 - 0x7ff804962ffc com.apple.CoreFoundation (6.9) /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation 0x7ff80ef33000 - 0x7ff80f1cdff3 com.apple.HIToolbox (2.1.1) \<2aa738bf-9f72-3227-8bba-7eae7b9f080b\> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox 0x7ff8040d5000 - 0x7ff80416581f dyld (_) \<18f658dd-20f3-324d-b7ac-8a9c60b574b3\> /usr/lib/dyld 0x0 - 0xffffffffffffffff ??? (_) \<00000000-0000-0000-0000-000000000000\> ??? 0x7ff804395000 - 0x7ff80440fff3 libc++.1.dylib (\*) \<69eca28c-bfb7-35bf-ad4f-1bece712d239\> /usr/lib/libc++.1.dylib External Modification Summary: Calls made by other processes targeting this process: task\_for\_pid: 0 thread\_create: 0 thread\_set\_state: 0 Calls made by this process: task\_for\_pid: 0 thread\_create: 0 thread\_set\_state: 0 Calls made by all processes on this machine: task\_for\_pid: 0 thread\_create: 0 thread\_set\_state: 0 VM Region Summary: ReadOnly portion of Libraries: Total=563.1M resident=0K(0%) swapped\_out\_or\_unallocated=563.1M(100%) Writable regions: Total=660.1M written=0K(0%) resident=0K(0%) swapped\_out=0K(0%) unallocated=660.1M(100%) … Model: MacBookPro15,2, BootROM 2022.140.5.0.0 (iBridge: 21.16.6074.0.0,0), 4 processors, Quad-Core Intel Core i5, 2.3 GHz, 8 GB, SMC Graphics: Intel Iris Plus Graphics 655, Intel Iris Plus Graphics 655, Built-In Display: Color LCD, 2560 x 1600 Retina, Main, MirrorOff, Online Memory Module: BANK 0/ChannelA-DIMM0, 4 GB, LPDDR3, 2133 MHz, Samsung, K4E6E304EC-EGCG Memory Module: BANK 2/ChannelB-DIMM0, 4 GB, LPDDR3, 2133 MHz, Samsung, K4E6E304EC-EGCG AirPort: spairport\_wireless\_card\_type\_wifi (0x14E4, 0x7BF), wl0: Jul 10 2023 12:30:19 version 9.30.503.0.32.5.92 FWID 01-88a8883 AirPort: Bluetooth: Version (null), 0 services, 0 devices, 0 incoming serial ports Network Service: Wi-Fi, AirPort, en0 USB Device: USB31Bus USB Device: T2Bus USB Device: Touch Bar Backlight USB Device: Touch Bar Display USB Device: Apple Internal Keyboard / Trackpad USB Device: Headset USB Device: Ambient Light Sensor USB Device: FaceTime HD Camera (Built-in) USB Device: Apple T2 Controller Thunderbolt Bus: MacBook Pro, Apple Inc., 47.5 Thunderbolt Bus: MacBook Pro, Apple Inc., 47.5 ‘’’ Any tips to fix this would be appreciated. Thank you! ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [August 14, 2024, 1:21pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/2 "2024-08-14T13:21:42Z")
Hi Hokyung, I’m currently away on vacation, but I can help you with this when I return (the week of August 19). One quick thought: Are you running the same MWorks version on both the client and server machine? If not, that could be the cause of this problem. Mixing MWorks versions is not supported. Cheers, Chris ---
**Author:** ![hokysung](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@hokysung](https://mworks.discourse.group/u/hokysung)\ **Post date:** [August 15, 2024, 12:08am UTC](https://mworks.discourse.group/t/mworks-client-error/1017/3 "2024-08-15T00:08:53Z")
I see, yes I’ve been running different versions in the rig and on my laptop. I’ll see if updating the rig one is a possibility. ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [August 19, 2024, 4:19pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/4 "2024-08-19T16:19:33Z")
Hi Hokyung, I’m seeing this crash, too, although not consistently. Let me investigate further and get back to you. Cheers, Chris ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [August 23, 2024, 12:54pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/5 "2024-08-23T12:54:20Z")
Hi Hokyung, I’ve tracked the crashes I was seeing down to an [issue](https://github.com/mworks/mworks-issues/issues/460) in the [fake monkey](https://mworks.github.io/documentation/latest/components/fake_monkey_io_device.html) plugin. The bug has actually been present for longer than I’ve been working on MWorks, but, for whatever reason, it hasn’t caused problems until now. Luckily, the fix is very simple. When MWClient crashed for you, were you also using a fake monkey? If so, I assume the issue I found was at fault. If not, then there must be some other issue that is producing the same (bad) result. Please let me know! Thanks, Chris ---
**Author:** ![hokysung](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@hokysung](https://mworks.discourse.group/u/hokysung)\ **Post date:** [August 24, 2024, 7:24pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/6 "2024-08-24T19:24:12Z")
Hi Chris, Thanks for looking into this. I am not using the fake monkey plugin. I will retry the experiment on Monday and let you know if I still see the same crash. Best, Hokyung Sung ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [August 26, 2024, 3:39pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/7 "2024-08-26T15:39:50Z")
Hi Hokyung, OK, thanks for letting me know. The problem in the fake monkey is that it sometimes produces [NaN](https://en.wikipedia.org/wiki/NaN) values for the eye positions, which leads to a crash in the eye window. Since you’re not using the fake monkey, some other component must be generating NaN’s, too. Are you getting your eye position data from an [EyeLink](https://mworks.github.io/documentation/latest/components/eyelink_device.html)? Also, are you plotting only the eye signal, or are you plotting an auxiliary analog signal, too? Thanks, Chris ---
**Author:** ![hokysung](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@hokysung](https://mworks.discourse.group/u/hokysung)\ **Post date:** [August 26, 2024, 9:37pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/8 "2024-08-26T21:37:27Z")
Yes, I’m using an EyeLink device for eye tracking. I’m only plotting an eye signal and two digital signals, both of which only take values of either 0 or 1. Best, Hokyung ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [August 27, 2024, 4:11pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/9 "2024-08-27T16:11:13Z")
Hi Hokyung, Another question: From what parameters on the EyeLink device are you getting the eye positions? For example, are you using [eye\_rx](https://mworks.github.io/documentation/latest/components/eyelink_device.html#eye-rx) and [eye\_ry](https://mworks.github.io/documentation/latest/components/eyelink_device.html#eye-ry)? Thanks, Chris ---
**Author:** ![hokysung](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@hokysung](https://mworks.discourse.group/u/hokysung)\ **Post date:** [August 27, 2024, 5:58pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/10 "2024-08-27T17:58:40Z")
eyelink eye\_tracker ( … pupil\_rx = pupil\_rx pupil\_ry = pupil\_ry … ) linear\_eye\_calibrator eye\_calibrator ( // standard\_eye\_calibrator eye\_calibrator ( // use quadratic (9 parameters) eyeh\_raw = pupil\_rx eyev\_raw = pupil\_ry eyeh\_calibrated = eye\_x\_calibrated eyev\_calibrated = eye\_y\_calibrated ) boxcar\_filter\_1d ( in1 = eye\_x\_calibrated out1 = eye\_x width\_samples = 5 ) boxcar\_filter\_1d ( in1 = eye\_y\_calibrated out1 = eye\_y width\_samples = 5 ) This is my setup that leads to eye\_x and eye\_y being monitored in the Eye Window. ---
**Author:** ![hokysung](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@hokysung](https://mworks.discourse.group/u/hokysung)\ **Post date:** [August 27, 2024, 10:22pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/11 "2024-08-27T22:22:03Z")
Hi, I just tried connecting again and the error seems to appear again. I also tried with mouse input, and the error persists so it does not seem to be only an Eyelink problem. One thing – I noticed that when I first connect, I see many many warning messages for many (but not all) variables in the form of: “Invalid persistent value for variable “x””. I don’t recall this happening before I began to see the crash, though I might have just missed it then. I wonder if this is related at all. Thanks, Hokyung ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [August 28, 2024, 2:35pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/12 "2024-08-28T14:35:52Z")
Hi Hokyung, > I also tried with mouse input, and the error persists so it does not seem to be only an Eyelink problem. I guess that’s good, because I have not been able to find any issues in the EyeLink plugin code that would cause it to output NaN or other non-finite eye position values. > I see many many warning messages for many (but not all) variables in the form of: “Invalid persistent value for variable “x””. I don’t recall this happening before I began to see the crash, though I might have just missed it then. I wonder if this is related at all. This indicates that the versions of MWClient and MWServer that you’re using are mismatched. Specifically, MWServer must be version 0.11 or earlier, and MWClient must be 0.12 or later. As I tried to say previously, mixing versions this way is never OK. You _must_ use the _same_ version for both MWServer and MWClient, even when they’re running on separate machines. Chris ---
**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Post date:** [October 28, 2024, 9:32pm UTC](https://mworks.discourse.group/t/mworks-client-error/1017/13 "2024-10-28T21:32:10Z")