I recently switched from Vista to XP, and I kept a copy of the game files from the Vista install (ie, copied the whole GC2 folder onto an external drive, installed XP, and then copied the folder back). Is there a way to get SDC to see the existing install and do its validation thing? I've tried setting the install path for GC2 to C:\Games\, as well as C:\Games\GC2 (with the latter being where the game files are located) but it just doesn't seem to see the files - there's a box labelled 'Install' next to the game files.
Is there a way to get this going, or do I have to re-download the game?