Monterey woes

[Irl]

I decided to update my 2017 MacBook Pro directly to Monterey from High Sierra. BIG MISTAKE! Lots of problems, decided to just restore the system disk from my backup in SuperDuper, which runs regularly and has always produced a bootable disk. The disk does boot, but when I try to start SuperDuper from that disk it crashes. There is a long crash dump which starts as follows. How do I get SD to run so I can get back onto solid ground? I have the whole dump if more info would be useful.
Process: SuperDuper! [570]
Path: /Applications/SuperDuper!.app/Contents/MacOS/SuperDuper!
Identifier: SuperDuper!
Version: 3.5 (122)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: SuperDuper! [570]
User ID: 503

Date/Time: 2022-01-10 21:30:10.518 -0500
OS Version: Mac OS X 10.13.6 (17G14042)
Report Version: 12
Bridge OS Version: 3.0 (14Y910)
Anonymous UUID: 75F11598-168D-B5CC-1459-A08436606CE5


Time Awake Since Boot: 240 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Application Specific Information:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil'
terminating with uncaught exception of type NSException
abort() called

[dnanian]

Please send an email to support and I'll be happy to help out.