jamtracks not working after update

[Sgiunta]

After the last update, my jamtracks will not load. The app freezes. I tried clearing the cache. It tries to reload the track but then freezes at authentication. Anyone else having this problem?

Had issue after update last night. Could not play back jam track from begining of track jt would freeze and send interface errors.  After many tries and reboots i found that if i started the track after the beginning it worked but i cant start from the beginning of the track.. if it helps..