Unknowing that the demo was about to end, I saved my old game before the update at the last possible screen, the "thank you for playing the demo" screen. After installing the new update and loading the largest file option presented (the 200KiB one), fairly confident that was the correct one, I loaded up my old game and it sent me to the set character relationship screen. Barely remembering my character, I did my best to put it as I had chosen before, and then pressed "done" and it went to the title screen.
Attempting to roll back shows a script error. Is there any way to fix this and preserve my old data, or is the old script and/or my save incompatible in a way that's too difficult to fix? Is there someone I could give the error information (exactly where in the script things went wrong) to?