Can't get opendiff to work on RTF files

This worked great until it didn't. I can't get opendiff to compare two RTF files. This worked up until a couple days ago. I didn't upgrade or change anything within Xcode. It looks like it is failing on converting RTF to ASCII. Anyone know what may be the problem?

Code Block 2021-05-13 00:44:33.977 convertRichTextToAscii[1640:52566] -[NSConcreteAttributedString initWithRTF:documentAttributes:]: unrecognized selector sent to instance 0x7fcecec0add0
2021-05-13 00:44:33.978 convertRichTextToAscii[1640:52566] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSConcreteAttributedString initWithRTF:documentAttributes:]: unrecognized selector sent to instance 0x7fcecec0add0'
* First throw call stack:
(
0   CoreFoundation                      0x00007fff206bc98b __exceptionPreprocess + 242
1   libobjc.A.dylib                     0x00007fff203f4d92 objc_exception_throw + 48
2   CoreFoundation                      0x00007fff2073f3ad -[NSObject(NSObject) __retain_OA] + 0
3   CoreFoundation                      0x00007fff206249bb ___forwarding___ + 1448
4   CoreFoundation                      0x00007fff20624388 _CF_forwarding_prep_0 + 120
5   convertRichTextToAscii              0x0000000109b63dbd main + 211
6   libdyld.dylib                       0x00007fff20564f3d start + 1
7   ???                                 0x0000000000000002 0x0 + 2
)
libc++abi: terminating with uncaught exception of type NSException
2021-05-13 00:44:33.984 convertRichTextToAscii[1641:52568] -[NSConcreteAttributedString initWithRTF:documentAttributes:]: unrecognized selector sent to instance 0x7f9c5ac0add0
2021-05-13 00:44:33.985 convertRichTextToAscii[1641:52568] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSConcreteAttributedString initWithRTF:documentAttributes:]: unrecognized selector sent to instance 0x7f9c5ac0add0'
* First throw call stack:
(
0   CoreFoundation                      0x00007fff206bc98b __exceptionPreprocess + 242
1   libobjc.A.dylib                     0x00007fff203f4d92 objc_exception_throw + 48
2   CoreFoundation                      0x00007fff2073f3ad -[NSObject(NSObject) __retain_OA] + 0
3   CoreFoundation                      0x00007fff206249bb ___forwarding___ + 1448
4   CoreFoundation                      0x00007fff20624388 _CF_forwarding_prep_0 + 120
5   convertRichTextToAscii              0x0000000103ec1dbd main + 211
6   libdyld.dylib                       0x00007fff20564f3d start + 1
)
libc++abi: terminating with uncaught exception of type NSException
2021-05-13 00:44:34.002 FileMerge[1590:47704] *** Assertion failure in -[DiffItem initWithDiffDescriptor:], DiffItem.m:81


Wondering if you were able to resolve - I'm seeing the same behavior post upgrading to XCodeV14.2. Thanks.

Wondering if you found a solution for this - I'm seeing the same error with XCodeV14.2.

Can't get opendiff to work on RTF files
 
 
Q