Ive been using your addon awhile and its great. However just in the last week I'm having difficulties. The ACE3 and Libperiodic files are being rejected and the program keep trying to reinstall them over and over with no way to stop it. The program says these 2 files are not zip files. I have changed nothing - not sure what's happened. ANy advice?!
If you could upload your JWowupdater.log somewhere so i can have a look at it. (Right after using the updater and getting the error).
Also just deleting your Ace3 and LibPeriodic folders and just let JWU reinstall them might work.