I get the same error but I cannot do a system restore because I am working on my comic book and will lose several days worth of progress. (If I try to put the files on a flashdrive it will change their format and merge the layers of the drawings making them uneditable later.) I use windows 8.1 and have tried just about everything else. I have uninstalled and reinstalled, reset my computer, tried fixing the script in the files. Nothing works. I hope to goodness they fix this soon.