Have you got a backup of your scripts folder?
since I only have room for one install on my HDD. I tend to make a backup every 2 months [on Flash Drive], then keep all Wips, HPs [I get to do for others] on a Flash drive. If something goes Drastically wrong, I can go back to BC scripts of 2 months ago, then start reinstalling one at a time.
If have No good Idea, whats up.