Storyboard Pro 7 crashing

I have a file that was created using Storyboard Pro 20 with the “camera by compatibility mode” activated in the preferences, now when I try to open it in Storyboard Pro 7, the file crashes. I have never had any trouble going back and forth between 20 and 7 before this. And I have tried importing the file, as well as saving it out as a back up from 20, extracting it, merging it, etc, but nothing seems to work. When I check the terminal prompt that launches when I open the file in SBP 7, this is what it says:

Toon Boom Storyboard Pro
Storyboard Pro (StoryboardPro.exe) version 17.10.1 build 15476 2020-01-31 14:58:30

QFSFileEngine::open: No file name specified
TUMessage::setInstance: Request to set a second TUMessage singleton
Graphito Engine initialized
Toon Boom Harmony Premium
MediaServer (MediaServer.exe) version 17.10.1 build 15476 2020-01-31 14:58:30

final message to log : T 09:26:26.188 MMX_SoundEngine
MovieIO init
No CL Platforms detected
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method
libpng warning: Unknown iTXt compression type or method

Not sure if that reveals anything to help fix the issue, but if anyone has any suggestions on how I can get the file to open in SBP7 without it crashing anymore, I would really appreciate it.
Thanks in advance.
Dan

Maybe try updating to the latest build of SBP7 which is 17.10.4.17497?
Have you tried just creating a new project and make some quick test panels in SBP20 and then try opening SBP7. Maybe a setting has changed since your last project?