Used to be great, but now constantly freezes during sync

I have a large Mental Case library, and while this helped make previous versions of Mental Case a bit slow, after the update it is unfortunately unusable. The sync process will not complete and freezes. I have to force quit, but that doesn’t help either. I am not able to use the suite that I purchesed for iMac, iPhone, or iPad.

Theocritus125 about Mental Case 2 — Flashcards for the Serious Student