I have no experience with joiplay so i cannot speak with any certainity to a fix to this and i dont know if this bug has been raised to the attention of Cinna but i'll make sure it is, but in the meantime, one thing you might try is seeing if uploading your savefiles (including the config and globals) and having someone not on joiplay load them and see if that allows for the game to get past the issue you are stuck on, honestly im not sure which file it's calling out to when it has to flag what phase of the interruption by Unknown that it has to be at but i'd think one of the files in your saves folder is a safe bet.