[Tome Keeper]

When you go into ADE, if you have library books try to read them, if Copia has messed it up it will give you an error, telling you the book isn't there. If not your fine.

If you have not used ADE, then it shouldn't be an issue as you can re-authorise it. It's only a problem if you have library (overdrive) books in ADE at the time.

When I redownloaded my books from Overdrive, after deleting Copia, they seemed to work fine. To be fair, Copia did give a warning that I would deregister my Adobe account from the computer, but stupidly didn't think it would affect my library loans.