I know you were reluctant to give the GS7 beta a try, but given the situation, I suggest you give it a try. It will try to import your GS 6 library, but the code for doing so is tuned by us. (Whereas in GS 6, there’s is probably some piece of Apple’s CoreData library that’s acting up and eating away all your memory). Here is a post to the latest GS 7 beta version: