The last several days since the update have been a lesson in futility. The MAC client would not update properly. I have had to start and stop in 10+ times. Then after it finally updates and restarts the files are screwed up and it won't play. I removed the TM from the file name as was a hint in the forums, that didn't really make a difference. I have never had any issues until this time.
Any suggestions - I did redownload the client from Steam...same thing again.
I found an old client and transferred it over - it started updating...same thing