Go the same "error", the beta does not help. Yesterday, this problem appeared to me for the first time. Thought it was the installation of the beta files ^^ Complete Reinstall did not help a thing.
I did not play for about a week. The only thing I changed in my setup was the upgrade of the Amd Catalyst 10.8 from version 10.7. But even a rollback of the drivers had no effect in the issue.