Only the full game edition is cancelled. There is going to be an update to the current demo and I'm making a DINNA STRIKES BACK mod for another pt beta build so its only the full game version that's canned.
My only advice to fix it is to delete the files and download them again. Don't remove anything from the folder (except the shortcut and stuff that obviously isn't part of the game itself). So keep the executable, data file, and music files in the folder together.
