Godo crash opening existing c# project

[irmantus]

Godot version:
Godot Mono 3.2
Godot Mono 3.2.1 RC2

OS/device including version:
macOS 10.12.6

Issue description:
Project was working fine yesterday, but today when I try to open same project it crashes.

Dump from terminal

Irmantass-iMac:Applications irmantas$ ./Godot_mono.app/Contents/MacOS/Godot arguments 0: ./Godot_mono.app/Contents/MacOS/Godot Current path: /Applications Godot Engine v3.2.stable.mono.official - https://godotengine.org OpenGL ES 3.0 Renderer: Intel Iris Pro OpenGL Engine

Mono: Logfile is: /Users/irmantas/Library/Application Support/Godot/mono/mono_logs/2020_03_05 22.30.43 (1383).txt
Editing project: /Users/irmantas/MEGAsync/Game/myGame (::Users::irmantas::MEGAsync::Game::myGame)
arguments
0: /Applications/Godot_mono.app/Contents/MacOS/Godot
1: --path
2: /Users/irmantas/MEGAsync/Game/myGame
3: --editor
Current path: /Applications
Godot Engine v3.2.stable.mono.official - https://godotengine.org
OpenGL ES 3.0 Renderer: Intel Iris Pro OpenGL Engine

Mono: Logfile is: /Users/irmantas/Library/Application Support/Godot/mono/mono_logs/2020_03_05 22.30.47 (1384).txt
ERROR: copy: Failed to open res://.mono/assemblies/Debug/GodotSharp.xml
At: core/os/dir_access.cpp:297.
WARNING: copy_prebuilt_api_assembly: Failed to copy 'GodotSharp.xml'.
At: modules/mono/mono_gd/gd_mono.cpp:633.
ERROR: copy: Failed to open res://.mono/assemblies/Debug/GodotSharp.pdb
At: core/os/dir_access.cpp:297.
WARNING: copy_prebuilt_api_assembly: Failed to copy 'GodotSharp.pdb'.
At: modules/mono/mono_gd/gd_mono.cpp:637.
ERROR: copy: Failed to open res://.mono/assemblies/Debug/GodotSharp.dll
At: core/os/dir_access.cpp:297.
ERROR: copy_prebuilt_api_assembly: Failed to copy 'GodotSharp.dll'.
At: modules/mono/mono_gd/gd_mono.cpp:641.
ERROR: _load_api_assemblies: The assembly is invalidated and the prebuilt assemblies are missing.
At: modules/mono/mono_gd/gd_mono.cpp:910.

=================================================================
Native Crash Reporting

Got a SIGILL while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.

=================================================================
Native stacktrace:

0x102da39d8 - /Applications/Godot_mono.app/Contents/MacOS/Godot : mono_dump_native_crash_info
0x102d97245 - /Applications/Godot_mono.app/Contents/MacOS/Godot : mono_handle_native_crash
0x102daabf0 - /Applications/Godot_mono.app/Contents/MacOS/Godot : mono_sigill_signal_handler
0x7fffadea3b3a - /usr/lib/system/libsystem_platform.dylib : _sigtramp
0x21 - Unknown
0x1035b779e - /Applications/Godot_mono.app/Contents/MacOS/Godot : _ZN6GDMono26initialize_load_assembliesEv
0x103530c0a - /Applications/Godot_mono.app/Contents/MacOS/Godot : _ZN14CSharpLanguage4initEv
0x10578bd39 - /Applications/Godot_mono.app/Contents/MacOS/Godot : _ZN12ScriptServer14init_languagesEv
0x10302655a - /Applications/Godot_mono.app/Contents/MacOS/Godot : _ZN4Main6setup2Ey
0x103020c48 - /Applications/Godot_mono.app/Contents/MacOS/Godot : _ZN4Main5setupEPKciPPcb
0x1030075d9 - /Applications/Godot_mono.app/Contents/MacOS/Godot : main
0x7fffadc94235 - /usr/lib/system/libdyld.dylib : start

=================================================================
Telemetry Dumper:

Pkilling 0x70000f939000 from 0x7fffb6bc43c0

• Assertion: should not be reached at threads.c:6254

Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object
Entering thread summarizer pause from 0x7fffb6bc43c0
Finished thread summarizer pause from 0x7fffb6bc43c0.
ERROR: debug_send_unhandled_exception_error: System.NullReferenceException: Object reference not set to an instance of an object
At: modules/mono/mono_gd/gd_mono_utils.cpp:357.

Waiting for dumping threads to resume
Irmantass-iMac:Applications irmantas$

External Debugger Dump:

=================================================================
(lldb) command source -s 0 '/tmp/mono-gdb-commands.1384'
Executing commands in '/tmp/mono-gdb-commands.1384'.
(lldb) process attach --pid 1384
Process 1384 stopped

• thread adding global doesn't automatically flush to engine.cfg and is confusing. #1, name = 'tid_307', queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  frame #0: 0x00007fffaddc33ee libsystem_kernel.dylib__wait4 + 10 libsystem_kernel.dylib__wait4:
  -> 0x7fffaddc33ee <+10>: jae 0x7fffaddc33f8 ; <+20>
  0x7fffaddc33f0 <+12>: movq %rax, %rdi
  0x7fffaddc33f3 <+15>: jmp 0x7fffaddbbcd4 ; cerror
  0x7fffaddc33f8 <+20>: retq
  Target 0: (Godot) stopped.

Executable module set to "/Applications/Godot_mono.app/Contents/MacOS/Godot".
Architecture set to: x86_64h-apple-macosx.
(lldb) thread list
Process 1384 stopped

• thread adding global doesn't automatically flush to engine.cfg and is confusing. #1: tid = 0x15f45, 0x00007fffaddc33ee libsystem_kernel.dylib__wait4 + 10, name = 'tid_307', queue = 'com.apple.main-thread', stop reason = signal SIGSTOP thread #2: tid = 0x15f46, 0x00007fffaddc344e libsystem_kernel.dylib__workq_kernreturn + 10
  thread sometime when ticking auto play on a Streamplayer will make the music starts playing in the editor #3: tid = 0x15f47, 0x00007fffaddc344e libsystem_kernel.dylib__workq_kernreturn + 10 thread #4: tid = 0x15f48, 0x00007fffaddc344e libsystem_kernel.dylib__workq_kernreturn + 10
  thread Can't make a 2D (as well as 3D) rigid body bounce #5: tid = 0x15f5b, 0x00007fffaddc4246 libsystem_kernel.dylibread + 10 thread #6: tid = 0x15f69, 0x00007fffaddc4246 libsystem_kernel.dylibread + 10
  thread Fix typo in font import plugin. #7: tid = 0x15f6f, 0x00007fffaddbb39e libsystem_kernel.dylibsemaphore_timedwait_trap + 10 thread #8: tid = 0x15f77, 0x00007fffaddbb34a libsystem_kernel.dylibmach_msg_trap + 10, name = 'com.apple.audio.IOThread.client'
  thread 2D Lights ? #9: tid = 0x15f79, 0x00007fffaddc2bf2 libsystem_kernel.dylib__psynch_cvwait + 10, name = 'SGen worker' thread #10: tid = 0x15f7a, 0x00007fffaddbb386 libsystem_kernel.dylibsemaphore_wait_trap + 10, name = 'Finalizer'
  (lldb) thread backtrace all
• thread adding global doesn't automatically flush to engine.cfg and is confusing. #1, name = 'tid_307', queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  • frame #0: 0x00007fffaddc33ee libsystem_kernel.dylib__wait4 + 10 frame #1: 0x0000000102da3c03 Godotmono_dump_native_crash_info + 691
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x0000000102d97245 Godotmono_handle_native_crash + 325 frame #3: 0x0000000102daabf0 Godotmono_sigill_signal_handler + 80
    frame Audio is unsynced in VideoPlayer node #4: 0x00007fffadea3b3a libsystem_platform.dylib_sigtramp + 26 frame #5: 0x00000001035b7a43 GodotGDMono::_load_api_assemblies() + 467
    frame set_video_mode not implemented on any platform #6: 0x00000001035b779e GodotGDMono::initialize_load_assemblies() + 14 frame #7: 0x0000000103530c0a GodotCSharpLanguage::init() + 314
    frame Unable to export to Linux platform #8: 0x000000010578bd39 GodotScriptServer::init_languages() + 937 frame #9: 0x000000010302655a GodotMain::setup2(unsigned long long) + 6554
    frame stretch_2d breaks touchscreenbutton in android #10: 0x0000000103020c48 GodotMain::setup(char const*, int, char**, bool) + 25368 frame #11: 0x00000001030075d9 Godotmain + 313
    frame Windows 7 build failure #12: 0x00007fffadc94235 libdyld.dylibstart + 1 frame #13: 0x00007fffadc94235 libdyld.dylibstart + 1
    thread if you update texture file, it would be good if it reflects in the engine #2
    frame #0: 0x00007fffaddc344e libsystem_kernel.dylib__workq_kernreturn + 10 frame #1: 0x00007fffadead48e libsystem_pthread.dylib_pthread_wqthread + 1023
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x00007fffadead07d libsystem_pthread.dylibstart_wqthread + 13 thread #3 frame #0: 0x00007fffaddc344e libsystem_kernel.dylib__workq_kernreturn + 10
    frame adding global doesn't automatically flush to engine.cfg and is confusing. #1: 0x00007fffadead621 libsystem_pthread.dylib_pthread_wqthread + 1426 frame #2: 0x00007fffadead07d libsystem_pthread.dylibstart_wqthread + 13
    thread Audio is unsynced in VideoPlayer node #4
    frame #0: 0x00007fffaddc344e libsystem_kernel.dylib__workq_kernreturn + 10 frame #1: 0x00007fffadead621 libsystem_pthread.dylib_pthread_wqthread + 1426
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x00007fffadead07d libsystem_pthread.dylibstart_wqthread + 13 thread #5 frame #0: 0x00007fffaddc4246 libsystem_kernel.dylibread + 10
    frame adding global doesn't automatically flush to engine.cfg and is confusing. #1: 0x0000000103007a59 GodotSemaphoreOSX::wait() + 25 frame #2: 0x0000000105942353 Godot_IP_ResolverPrivate::_thread_function(void*) + 83
    frame sometime when ticking auto play on a Streamplayer will make the music starts playing in the editor #3: 0x0000000103a786a5 GodotThreadPosix::thread_callback(void*) + 85 frame #4: 0x00007fffadead93b libsystem_pthread.dylib_pthread_body + 180
    frame Can't make a 2D (as well as 3D) rigid body bounce #5: 0x00007fffadead887 libsystem_pthread.dylib_pthread_start + 286 frame #6: 0x00007fffadead08d libsystem_pthread.dylibthread_start + 13
    thread set_video_mode not implemented on any platform #6
    frame #0: 0x00007fffaddc4246 libsystem_kernel.dylibread + 10 frame #1: 0x0000000103007a59 GodotSemaphoreOSX::wait() + 25
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x000000010551e4ed GodotVisualServerScene::_gi_probe_bake_thread() + 29 frame #3: 0x0000000103a786a5 GodotThreadPosix::thread_callback(void*) + 85
    frame Audio is unsynced in VideoPlayer node #4: 0x00007fffadead93b libsystem_pthread.dylib_pthread_body + 180 frame #5: 0x00007fffadead887 libsystem_pthread.dylib_pthread_start + 286
    frame set_video_mode not implemented on any platform #6: 0x00007fffadead08d libsystem_pthread.dylibthread_start + 13 thread #7 frame #0: 0x00007fffaddbb39e libsystem_kernel.dylibsemaphore_timedwait_trap + 10
    frame adding global doesn't automatically flush to engine.cfg and is confusing. #1: 0x00007fffadc76b09 libdispatch.dylib_os_semaphore_timedwait + 72 frame #2: 0x00007fffadc67864 libdispatch.dylib_dispatch_semaphore_wait_slow + 58
    frame sometime when ticking auto play on a Streamplayer will make the music starts playing in the editor #3: 0x00007fffadc62290 libdispatch.dylib_dispatch_worker_thread + 275 frame #4: 0x00007fffadead93b libsystem_pthread.dylib_pthread_body + 180
    frame Can't make a 2D (as well as 3D) rigid body bounce #5: 0x00007fffadead887 libsystem_pthread.dylib_pthread_start + 286 frame #6: 0x00007fffadead08d libsystem_pthread.dylibthread_start + 13
    thread Unable to export to Linux platform #8, name = 'com.apple.audio.IOThread.client'
    frame #0: 0x00007fffaddbb34a libsystem_kernel.dylibmach_msg_trap + 10 frame #1: 0x00007fffaddba797 libsystem_kernel.dylibmach_msg + 55
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x00007fff98008935 CoreAudioHALB_MachPort::SendMessageWithReply(unsigned int, unsigned int, unsigned int, unsigned int, mach_msg_header_t*, bool, unsigned int) + 127 frame #3: 0x00007fff980088a6 CoreAudioHALB_MachPort::SendSimpleMessageWithSimpleReply(unsigned int, unsigned int, int, int&, bool, unsigned int) + 42
    frame Audio is unsynced in VideoPlayer node #4: 0x00007fff980058d0 CoreAudioHALC_ProxyIOContext::IOWorkLoop() + 1196 frame #5: 0x00007fff98005264 CoreAudioHALC_ProxyIOContext::IOThreadEntry(void*) + 128
    frame set_video_mode not implemented on any platform #6: 0x00007fff98004fa3 CoreAudioHALB_IOThread::Entry(void*) + 75 frame #7: 0x00007fffadead93b libsystem_pthread.dylib_pthread_body + 180
    frame Unable to export to Linux platform #8: 0x00007fffadead887 libsystem_pthread.dylib_pthread_start + 286 frame #9: 0x00007fffadead08d libsystem_pthread.dylibthread_start + 13
    thread 2D Lights ? #9, name = 'SGen worker'
    frame #0: 0x00007fffaddc2bf2 libsystem_kernel.dylib__psynch_cvwait + 10 frame #1: 0x00007fffadeae7fa libsystem_pthread.dylib_pthread_cond_wait + 712
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x0000000102fc0013 Godotthread_func + 243 frame #3: 0x00007fffadead93b libsystem_pthread.dylib_pthread_body + 180
    frame Audio is unsynced in VideoPlayer node #4: 0x00007fffadead887 libsystem_pthread.dylib_pthread_start + 286 frame #5: 0x00007fffadead08d libsystem_pthread.dylibthread_start + 13
    thread stretch_2d breaks touchscreenbutton in android #10, name = 'Finalizer'
    frame #0: 0x00007fffaddbb386 libsystem_kernel.dylibsemaphore_wait_trap + 10 frame #1: 0x0000000102e7aebb Godotfinalizer_thread + 379
    frame if you update texture file, it would be good if it reflects in the engine #2: 0x0000000102f4e676 Godotstart_wrapper_internal + 374 frame #3: 0x0000000102f4e4d7 Godotstart_wrapper + 71
    frame Audio is unsynced in VideoPlayer node #4: 0x00007fffadead93b libsystem_pthread.dylib_pthread_body + 180 frame #5: 0x00007fffadead887 libsystem_pthread.dylib_pthread_start + 286
    frame set_video_mode not implemented on any platform #6: 0x00007fffadead08d libsystem_pthread.dylib`thread_start + 13
    (lldb) detach
    Process 1384 detached
    (lldb) quit

=================================================================
Basic Fault Address Reporting

Memory around native instruction pointer (0x1035b7a42):0x1035b7a32 8d 45 d8 ba 8e 03 00 00 45 31 c9 e8 8e 91 0f 02 .E......E1......
0x1035b7a42 0f 0b 41 8a 07 84 c0 75 2c 48 8d 05 7e 01 89 03 ..A....u,H..~...
0x1035b7a52 80 b8 a9 02 00 00 00 75 3e 48 8d 3d a4 00 11 03 .......u>H.=....
0x1035b7a62 48 8d 35 af f9 10 03 48 8d 0d fe 01 11 03 ba a0 H.5....H........

=================================================================
Managed Stacktrace:

=================================================================

Irmantass-iMac:Applications irmantas$

[irmantus]

And today it started working again. Not sure what happened, maybe reboot did the trick.