(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
    frame #0: 0x00007fff6a2d0f3e libsystem_malloc.dylib`nanov2_allocate_from_block.cold.1 + 31
    frame #1: 0x00007fff6a2b19b1 libsystem_malloc.dylib`nanov2_allocate_from_block + 574
    frame #2: 0x00007fff6a2b0f2b libsystem_malloc.dylib`nanov2_allocate + 130
    frame #3: 0x00007fff6a2b3057 libsystem_malloc.dylib`nanov2_calloc + 81
    frame #4: 0x00007fff6a2b2f59 libsystem_malloc.dylib`malloc_zone_calloc + 99
    frame #5: 0x00007fff2ffc6473 CoreFoundation`_CFRuntimeCreateInstance + 293
    frame #6: 0x00007fff2ffd4d3b CoreFoundation`CFStringCreateMutable + 69
    frame #7: 0x00007fff2fff0e3b CoreFoundation`_CFStringCreateWithFormatAndArgumentsAux2 + 68
    frame #8: 0x00007fff3269ae20 Foundation`+[NSString stringWithFormat:] + 153
    frame #9: 0x00007fff3177ee74 LaunchServices`-[_LSDefaults darwinNotificationNameForCurrentUser:] + 242
    frame #10: 0x00007fff31888494 LaunchServices`invocation function for block in _LSDatabaseNotificationCheck() + 91
    frame #11: 0x0000000100589826 libdispatch.dylib`_dispatch_client_callout + 8
    frame #12: 0x000000010058af87 libdispatch.dylib`_dispatch_once_callout + 87
    frame #13: 0x00007fff3177ed64 LaunchServices`_LSDatabaseNotificationCheck() + 362
    frame #14: 0x00007fff3177d315 LaunchServices`_LSContextInitReturningError + 381
    frame #15: 0x00007fff3177d133 LaunchServices`LaunchServices::Database::Context::operator LSContext*() + 75
    frame #16: 0x00007fff317a4f3f LaunchServices`LaunchServices::URLPropertyProvider::prepareIsPackageValue(LaunchServices::Database::Context&, FSNode*, __FileCache*, __CFString const*, NSError* __autoreleasing*) + 28
    frame #17: 0x00007fff3177cbc9 LaunchServices`LaunchServices::URLPropertyProvider::prepareValues(__CFURL const*, __FileCache*, __CFString const* const*, void const**, long, void const*, __CFError**) + 573
    frame #18: 0x00007fff493f04c4 CoreServicesInternal`prepareValuesForBitmap(__CFURL const*, __FileCache*, _FilePropertyBitmap*, __CFError**) + 363
    frame #19: 0x00007fff4940767b CoreServicesInternal`_FSURLGetResourcePropertyFlags + 715
    frame #20: 0x00007fff300acacb CoreFoundation`_CFURLGetResourcePropertyFlags + 119
    frame #21: 0x00007fff49405da0 CoreServicesInternal`createBookmarkWithURLAtDepth(__CFAllocator const*, __CFURL const*, unsigned long, __CFURL const*, __CFArray const*, BookmarkMutableData&, unsigned int, bool, __CFError**) + 2706
    frame #22: 0x00007fff49404b1b CoreServicesInternal`_CFURLCreateBookmarkData + 1019
    frame #23: 0x00007fff300ac95a CoreFoundation`-[NSURL bookmarkDataWithOptions:includingResourceValuesForKeys:relativeToURL:error:] + 149
  * frame #24: 0x0000000100171ab7 libglkimp.dylib`-[TempStream encodeWithCoder:](self=0x0000600003b00b60, _cmd="encodeWithCoder:", encoder=0x0000600003008510) at TempStream.m:248:20
    frame #25: 0x00007fff326cacad Foundation`_encodeObject + 1214
    frame #26: 0x00007fff326cb9f7 Foundation`-[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 364
    frame #27: 0x00007fff326cacad Foundation`_encodeObject + 1214
    frame #28: 0x000000010016d296 libglkimp.dylib`-[TempLibrary encodeWithCoder:](self=0x0000600002600d20, _cmd="encodeWithCoder:", encoder=0x0000600003008510) at TempLibrary.m:180:2
    frame #29: 0x00007fff326cacad Foundation`_encodeObject + 1214
    frame #30: 0x00007fff327d80cb Foundation`+[NSKeyedArchiver archiveRootObject:toFile:] + 248
    frame #31: 0x0000000100004d72 glulxe`spatterglk_do_autosave(eventaddr=694582) at spatterstart.m:463:15
    frame #32: 0x0000000100004908 glulxe`spatterglk_game_select(eventaddr=694582) at spatterstart.m:368:2
    frame #33: 0x000000010000f46c glulxe`perform_glk(funcnum=192, numargs=1, arglist=0x0000000100022230) at glkop.c:258:7
    frame #34: 0x00000001000096bb glulxe`execute_loop at exec.c:638:16
    frame #35: 0x0000000100012d2a glulxe`glk_main at main.c:68:3
    frame #36: 0x000000010001b064 glulxe`main(argc=2, argv=0x00007ffeefbff4a8) at main.c:62:5
    frame #37: 0x00007fff6a0facc9 libdyld.dylib`start + 1
    frame #38: 0x00007fff6a0facc9 libdyld.dylib`start + 1
(lldb)