MATLAB 2020a crashes when opening a function

I could not open any functions in my folder. I tried opening them on MATLAB 2017a installed before and they worked. I wonder what caused this issue.

Fault Count: 1

Abnormal termination:

Unknown exception 0xc06d007f

Register State (from fault):

RAX = 00007fff20f61e3b RBX = 0000000000000000

RCX = 00000070febf6b40 RDX = 0000000000000016

RSP = 00000070febf6d90 RBP = 00000070febf6ee8

RSI = 00007ffec22a23b4 RDI = 00007ffec2250000

R8 = 0000023ace87df60 R9 = fffffffffffffffe

R10 = 0000023adacf2248 R11 = 0000000000000000

R12 = 0000000000000008 R13 = 00007ffec22a3078

R14 = 00007ffec22a3060 R15 = 00007ffec22a2450

RIP = 00007fff20f7a799 EFL = 00000202

CS = 0033 FS = 0053 GS = 002b

Stack Trace (from fault):

[ 0] 0x00007fff20f7a799 C:\WINDOWS\System32\KERNELBASE.dll+00239513 RaiseException+00000105

[ 1] 0x00007ffec22a1de4 C:\Users\experiment\Rigbox\signals\+audstream\source\open.mexw64+00007652 mexFunction+00003332

[ 2] 0x00007ffec22a1306 C:\Users\experiment\Rigbox\signals\+audstream\source\open.mexw64+00004870 mexFunction+00000550

[ 3] 0x00007ffec22a1172 C:\Users\experiment\Rigbox\signals\+audstream\source\open.mexw64+00004466 mexFunction+00000146

[ 4] 0x00007ffededbd406 C:\Program Files\MATLAB\R2020a\bin\win64\libmex.dll+00381958 mexfile::Inspector::needs_upgrade+00015190

[ 5] 0x00007ffededbe7db C:\Program Files\MATLAB\R2020a\bin\win64\libmex.dll+00387035 MexRetrieveVersion+00003563

[ 6] 0x00007ffededbe94c C:\Program Files\MATLAB\R2020a\bin\win64\libmex.dll+00387404 MexRetrieveVersion+00003932

[ 7] 0x00007ffededbeb14 C:\Program Files\MATLAB\R2020a\bin\win64\libmex.dll+00387860 MexRetrieveVersion+00004388

[ 8] 0x00007ffeded9f819 C:\Program Files\MATLAB\R2020a\bin\win64\libmex.dll+00260121 QueryMLFcnTable_libmex+00006377

[ 9] 0x00007ffedf33aee1 bin\win64\pgo\m_dispatcher.dll+00634593 Mfh_file::dispatch_file_common+00000165

[ 10] 0x00007ffedf33a571 bin\win64\pgo\m_dispatcher.dll+00632177 Mfh_error::lookup+00006517

[ 11] 0x00007ffedf33ae35 bin\win64\pgo\m_dispatcher.dll+00634421 Mfh_file::dispatch+00000045

[ 12] 0x00007ffedc4ebf68 bin\win64\pgo\m_lxe.dll+00442216

[ 13] 0x00007ffedc522776 bin\win64\pgo\m_lxe.dll+00665462

[ 14] 0x00007ffedc522660 bin\win64\pgo\m_lxe.dll+00665184

[ 15] 0x00007ffedc4ea3b4 bin\win64\pgo\m_lxe.dll+00435124

[ 16] 0x00007ffedc6196e1 bin\win64\pgo\m_lxe.dll+01677025 MathWorks::lxe::ShutdownLxeEngine+00076365

[ 17] 0x00007ffedc4dc65d bin\win64\pgo\m_lxe.dll+00378461

[ 18] 0x00007ffedc4dea14 bin\win64\pgo\m_lxe.dll+00387604

[ 19] 0x00007ffedc4dfb2d bin\win64\pgo\m_lxe.dll+00391981

[ 20] 0x00007ffedc4df71f bin\win64\pgo\m_lxe.dll+00390943

[ 21] 0x00007ffedc603390 bin\win64\pgo\m_lxe.dll+01586064 MathWorks::lxe::StartupLxeEngine+00780908

[ 22] 0x00007ffedc4e79d2 bin\win64\pgo\m_lxe.dll+00424402

[ 23] 0x00007ffedc4ddcfe bin\win64\pgo\m_lxe.dll+00384254

[ 24] 0x00007ffedc4dcd7c bin\win64\pgo\m_lxe.dll+00380284

[ 25] 0x00007ffedc56d12f bin\win64\pgo\m_lxe.dll+00971055 MathWorks::lxe::StartupLxeEngine+00165899

[ 26] 0x00007ffedc56d29b bin\win64\pgo\m_lxe.dll+00971419 MathWorks::lxe::StartupLxeEngine+00166263

[ 27] 0x00007ffedc56d192 bin\win64\pgo\m_lxe.dll+00971154 MathWorks::lxe::StartupLxeEngine+00165998

[ 28] 0x00007ffedc5a32f8 bin\win64\pgo\m_lxe.dll+01192696 MathWorks::lxe::StartupLxeEngine+00387540

[ 29] 0x00007ffedc5a32a6 bin\win64\pgo\m_lxe.dll+01192614 MathWorks::lxe::StartupLxeEngine+00387458

[ 30] 0x00007ffedc5a3222 bin\win64\pgo\m_lxe.dll+01192482 MathWorks::lxe::StartupLxeEngine+00387326

[ 31] 0x00007ffedef5910f bin\win64\pgo\m_interpreter.dll+00037135 inEvalCmdWithLocalReturnInDesiredWSAndPublishEvents+00000071

[ 32] 0x00007ffedf6783af C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00557999 iqm::InternalEvalPlugin::inEvalCmdWithLocalReturn+00000111

[ 33] 0x00007ffedf677d2b C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00556331 iqm::InternalEvalPlugin::execute+00000251

[ 34] 0x00007ffed30b9d1d C:\Program Files\MATLAB\R2020a\bin\win64\nativejmi.dll+00367901 nativejmi::JmiIIP::serializeExplicit+00007597

[ 35] 0x00007ffed3111c1d C:\Program Files\MATLAB\R2020a\bin\win64\nativejmi.dll+00728093 NativeLabCmdWinSetup+00350637

[ 36] 0x00007ffedf65ca03 C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00444931 iqm::Iqm::setupIqmFcnPtrs+00100227

[ 37] 0x00007ffedf633abe C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00277182 iqm::Iqm::create+00004302

[ 38] 0x00007ffeee7a84f6 C:\Program Files\MATLAB\R2020a\bin\win64\libmwbridge.dll+00099574 ioReadLine+00000726

[ 39] 0x00007ffeee7a82f0 C:\Program Files\MATLAB\R2020a\bin\win64\libmwbridge.dll+00099056 ioReadLine+00000208

[ 40] 0x00007ffeee7bd396 C:\Program Files\MATLAB\R2020a\bin\win64\libmwbridge.dll+00185238 mnDebugPrompt+00001990

[ 41] 0x00007ffeee7bcd26 C:\Program Files\MATLAB\R2020a\bin\win64\libmwbridge.dll+00183590 mnDebugPrompt+00000342

[ 42] 0x00007ffeee7bd7ca C:\Program Files\MATLAB\R2020a\bin\win64\libmwbridge.dll+00186314 mnParser+00000506

[ 43] 0x00007ffedf456a99 C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00551577 mcr_set_enableReadingFromStdin+00016745

[ 44] 0x00007ffedf3ea05a C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00106586 mcrOptions::set_use_license_manager+00071962

[ 45] 0x00007ffedf40b04a C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00241738 mcrOptions::set_use_license_manager+00207114

[ 46] 0x00007ffedf68653e C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00615742 iqm::PackagedTaskPlugin::execute+00000862

[ 47] 0x00007ffedf6863c9 C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00615369 iqm::PackagedTaskPlugin::execute+00000489

[ 48] 0x00007ffedf45084e C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00526414 mcrIsExternalAvailableBuiltin+00045518

[ 49] 0x00007ffedf65ca03 C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00444931 iqm::Iqm::setupIqmFcnPtrs+00100227

[ 50] 0x00007ffedf634e2f C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00282159 iqm::Iqm::create+00009279

[ 51] 0x00007ffedf634428 C:\Program Files\MATLAB\R2020a\bin\win64\iqm.dll+00279592 iqm::Iqm::create+00006712

[ 52] 0x00007ffedf427d06 C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00359686 mcrInstantiationError::operator=+00012150

[ 53] 0x00007ffedf42830c C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00361228 mcrInstantiationError::operator=+00013692

[ 54] 0x00007ffedf425f0c C:\Program Files\MATLAB\R2020a\bin\win64\mcr.dll+00352012 mcrInstantiationError::operator=+00004476

[ 55] 0x00007fff0861a203 C:\Program Files\MATLAB\R2020a\bin\win64\mwboost_thread-vc141-mt-x64-1_70.dll+00041475 mwboost::thread::swap+00000083

[ 56] 0x00007fff21d10e82 C:\WINDOWS\System32\ucrtbase.dll+00134786 beginthreadex+00000322

[ 57] 0x00007fff23a77bd4 C:\WINDOWS\System32\KERNEL32.DLL+00097236 BaseThreadInitThunk+00000020

[ 58] 0x00007fff23dcce51 C:\WINDOWS\SYSTEM32\ntdll.dll+00446033 RtlUserThreadStart+00000033

This error was detected while a MEX-file was running. If the MEX-file

is not an official MathWorks function, please examine its source code

for errors. Please consult the External Interfaces Guide for information

on debugging MEX-files.

** This crash report has been saved to disk as C:\Users\EXPERI~1\AppData\Local\Temp\matlab_crash_dump.16532-1 **

Caught "std::exception" Exception message is:

FatalException

Caught MathWorks::System::FatalException

[madhan ravi]

What do you mean by crushes?

[Adam Tong]

Crash, I mean. Sorry.

[Walter Roberson]

"crushes" is a spelling that sometimes get used for "crashes"

[madhan ravi]

Ah , I thought MATLAB had superpowers :(.

[Walter Roberson]

There appears to be a problem with the audstream.source.open mex file. I cannot tell what the exception is from the traceback.

The most common kinds of exception are:

• attempt to use a bad pointer -- possibly a corrupted pointer, or possibly not extracting the pointers correctly that were passed in by MATLAB, or possibly having to do with the change to how complex variables are handled (which changed the header in general
• attempt to free a pointer that is not to allocated memory (but that would tend to show a different traceback)
• attempt to call into a DLL that is missing (but that would tend to show a different traceback)

I would speculate that the pointers being passed in by MATLAB are not being handled correctly, but corrupted pointer cannot be ruled out.

You might need to recompile the mex file.

[Adam Danz]

"I could not open any functions in my folder. "

To be clear, this happens when you open any file in a specific folder?

Be sure to save a copy of the crash report saved at the location below. Tech support may need that if you end up going that route.

C:\Users\EXPERI~1\AppData\Local\Temp\matlab_crash_dump.16532-1 **