2021R1. App crashes at InitReports. Relevant part of Apple crash report below. Installed latest v4rb_x64_11 with same result. Tried with Xojo 2020R2.1 also with same result.
Process: DeltaJMS.debug [98441]
Path: /Users/USER/*/http://DeltaJMS.debug.app/Contents/MacOS/DeltaJMS.debug
Identifier: com.jjrenterprises.deltajms
Version: ??? (1.0.0.3.0)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: DeltaJMS.debug [98441]
User ID: 501
Date/Time: 2021-04-03 15:21:44.803 -0400
OS Version: Mac OS X 10.14.6 (18G8022)
Report Version: 12
Anonymous UUID: 836E35D4-892D-11F5-7CA6-62328F76A23C
Sleep/Wake UUID: ADEE3B64-CD04-4DE7-9072-4005BE7FBB53
Time Awake Since Boot: 2100000 seconds
Time Since Wake: 17000 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [98441]
VM Regions Near 0:
-->
__TEXT 000000010e5c7000-000000010f45b000 [ 14.6M] r-x/r-x SM=COW /Users/USER/*/http://DeltaJMS.debug.app/Contents/MacOS/DeltaJMS.debug
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libvshared_fat_release_x64.dylib 0x00000001135de652 fbl::String::String(char const*, int, char const*, fbl::EStringImpType) + 26
1 libvshared_fat_release_x64.dylib 0x00000001135a1007 fbl::xException::get_ErrorString() const + 53
2 v4rb_cocoa_64.dylib 0x0000000112376277 ProceedError(fbl::xException&

3 v4rb_cocoa_64.dylib 0x00000001123555e5 Valentina_InitReports(REALstringStruct*, REALstringStruct*, REALstringStruct*) + 126
4 DeltaJMS.debug 0x000000010e7dc7aa Valentina.InitReports%%sss + 74
5 DeltaJMS.debug 0x000000010e871b2b App.Event_Open%%o<App> + 939 (/App:12)
6 XojoFramework 0x000000010f8ebfe0 CocoaFinishApplicationStartup() + 152
7 XojoFramework 0x000000010f8eac63 0x10f7fe000 + 969827
8 com.apple.CoreFoundation 0x00007fff4db7a226 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
9 com.apple.CoreFoundation 0x00007fff4db7a1a0 ___CFXRegistrationPost_block_invoke + 63
10 com.apple.CoreFoundation 0x00007fff4db7a10a _CFXRegistrationPost + 404
11 com.apple.CoreFoundation 0x00007fff4db825b8 ___CFXNotificationPost_block_invoke + 87
12 com.apple.CoreFoundation 0x00007fff4daeae74 -[_CFXNotificationRegistrar find


13 com.apple.CoreFoundation 0x00007fff4daea227 _CFXNotificationPost + 732
14 com.apple.Foundation 0x00007fff4fd72a3b -[NSNotificationCenter postNotificationName

15 com.apple.AppKit 0x00007fff4b112fa4 -[NSApplication _postDidFinishNotification] + 312
16 com.apple.AppKit 0x00007fff4b1128f7 -[NSApplication _sendFinishLaunchingNotification] + 208
17 com.apple.AppKit 0x00007fff4b10cb7a _DPSNextEvent + 2156
18 com.apple.AppKit 0x00007fff4b10b46b -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1361
19 XojoFramework 0x000000010f8ec792 0x10f7fe000 + 976786
20 XojoFramework 0x000000010f8ec7d6 0x10f7fe000 + 976854
21 DeltaJMS.debug 0x000000010e692e85 Application._CallFunctionWithExceptionHandling%%o<Application>p + 181
22 XojoFramework 0x000000010fa6f3e8 CallFunctionWithExceptionHandling(void (*)()) + 254
23 XojoFramework 0x000000010f8ec73f 0x10f7fe000 + 976703
24 com.apple.AppKit 0x00007fff4b105588 -[NSApplication run] + 699
25 XojoFramework 0x000000010fa6dd32 RuntimeRun + 41
26 DeltaJMS.debug 0x000000010e76eef3 REALbasic._RuntimeRun + 19
27 DeltaJMS.debug 0x000000010f37f7ae _Main + 846 (/#main:879)
28 DeltaJMS.debug 0x000000010f37b383 main + 19
29 libdyld.dylib 0x00007fff79aac3d5 start + 1