Hey Sancho, im running into this error whenever i try importing another Season 1-2 playthrough into Interlude after completing an Interlude playthrough and saving.
The only way around it is to delete the persistant files from save and appdata, then importing the next playthrough.
I tried it without your mod installed and it didnt bring up the error, which is why i am posting it here.
It looks like it is happening when the screen for Play Interlude or Skip to Episode 9 is supposed to appear.
Steps to Reproduce:
Fresh install
Import a game into Interlude
Play till the end.
Save on the Save Here screen.
Exit to Main Menu.
Tap Import.
Select another (or the same) save to import.
Result:
Error (see attachments)
When i did these exact steps without your mod, the result is it brings up the Play Interlude or Skip to 9 screen.
Note: This is a clean install and clean saves that only have your mod.