I just got my new MacBook Air running the M1 chip. I downloaded the latest Spine 4.0.18. Crash on launch. Partial Error log attached.
Process:               Spine [66837]
Path:                  /Applications/Spine.app/Contents/MacOS/Spine
Identifier:            Spine
Version:               4.0.18 (4.0.18)
Code Type:             X86-64 (Translated)
Parent Process:        ??? [1]
Responsible:           Spine [66837]
User ID:               501
Date/Time:             2020-12-03 07:16:49.959 -0500
OS Version:            macOS 11.0.1 (20B29)
Report Version:        12
Anonymous UUID:        180006AC-536B-FF69-09C4-C8A7C433849A
Sleep/Wake UUID:       FF092278-42AB-4905-9ED1-DCD106F85E68
Time Awake Since Boot: 100000 seconds
Time Since Wake:       1900 seconds
System Integrity Protection: enabled
Crashed Thread:        4
Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000002050d90
Exception Note:        EXC_CORPSE_NOTIFY
Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [66837]
VM Regions Near 0x2050d90:
__TEXT                      104e50000-104e59000    [   36K] r-x/rwx SM=COW  
Thread 0:: Dispatch queue: com.apple.main-thread
0   ???                           	0x00007ffe95c769bc ???
1   libsystem_kernel.dylib        	0x00007fff20349e7e mach_msg_trap + 10
2   com.apple.CoreFoundation      	0x00007fff204764fd __CFRunLoopServiceMachPort + 316
3   com.apple.CoreFoundation      	0x00007fff20474be6 __CFRunLoopRun + 1319
4   com.apple.CoreFoundation      	0x00007fff20473fd2 CFRunLoopRunSpecific + 567
5   com.apple.HIToolbox           	0x00007fff28928fd0 RunCurrentEventLoopInMode + 292
6   com.apple.HIToolbox           	0x00007fff28928dcc ReceiveNextEventCommon + 709
7   com.apple.HIToolbox           	0x00007fff28928aef _BlockUntilNextEventMatchingListInModeWithFilter + 64
8   com.apple.AppKit              	0x00007fff22bc2f85 _DPSNextEvent + 883
9   com.apple.AppKit              	0x00007fff22bc174b -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1366
10  com.apple.AppKit              	0x00007fff22bb3bda -[NSApplication run] + 586
11  com.apple.AppKit              	0x00007fff22b87f31 NSApplicationMain + 816
12  libdyld.dylib                 	0x00007fff20399631 start + 1
Thread 1:: com.apple.rosetta.exceptionserver
0   runtime                       	0x00007ffdffe41cb8 0x7ffdffe3f000 + 11448
1   runtime                       	0x00007ffdffe4bee0 0x7ffdffe3f000 + 52960
2   runtime                       	0x00007ffdffe4cc3c 0x7ffdffe3f000 + 56380
Thread 2:
0   runtime                       	0x00007ffdffe998a0 0x7ffdffe3f000 + 370848
Thread 3:
0   runtime                       	0x00007ffdffe998a0 0x7ffdffe3f000 + 370848
Thread 4 Crashed:
0   dyld                          	0x0000000205024b7c ImageLoader::processInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 182
1   <translation info unavailable>	0x0000000104ee3114 ???
2   dyld                          	0x0000000205024c23 ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 83
Thread 5:: com.apple.NSEventThread
0   ???                           	0x00007ffe95c769bc ???
1   libsystem_kernel.dylib        	0x00007fff20349e7e mach_msg_trap + 10
2   com.apple.CoreFoundation      	0x00007fff204764fd __CFRunLoopServiceMachPort + 316
3   com.apple.CoreFoundation      	0x00007fff20474be6 __CFRunLoopRun + 1319
4   com.apple.CoreFoundation      	0x00007fff20473fd2 CFRunLoopRunSpecific + 567
5   com.apple.AppKit              	0x00007fff22d4936d _NSEventThread + 124
6   libsystem_pthread.dylib       	0x00007fff2037e950 _pthread_start + 224
7   libsystem_pthread.dylib       	0x00007fff2037a47b thread_start + 15
Thread 6:
0   runtime                       	0x00007ffdffe998a0 0x7ffdffe3f000 + 370848
Thread 4 crashed with X86 Thread State (64-bit):
  rax: 0x0000000002050ac8  rbx: 0x000000030e87f560  rcx: 0x0000000000080001  rdx: 0x0000000000009807
  rdi: 0x00006000020a0d81  rsi: 0x00000002050b3299  rbp: 0x000000030e881190  rsp: 0x000000030e87f560
   r8: 0x000000030e8811f1   r9: 0x000000030e87f560  r10: 0x0000000000000000  r11: 0x0000000000000000
  r12: 0x0000000000009807  r13: 0x000000030e8811a0  r14: 0x000000030e8811c0  r15: 0x0000000000000001
  rip: 0x0000000205024b7c  rfl: 0x0000000000000283