Make a backup of the file beforehand, then, without renaming it, tell 7zip to open the .pacc file. Then go to the character's data file and fix the issue. It's not the most time-efficient way to do this, but for doing a fix or two it works without breaking 90% of the time.One of rainbow dashes limits is too low for her options in the arena. I think werewolf? I think one of her holes max width is like 6.0 wheras the limit needed for the event is like 6.2 or 6.5
I have only 8 girls right now didn't see anyone else with the issue.
Edit: I tried to fix it myself but unsure if I did thinks right. I renamed mainpackages.pacc to .zip and unzipped and edited the character file to change the limit. But that broke things so I messed up the files.
Some older characters also have this issue.