Most Mavericks problems occurred right away, but I really don't know. I would look at Mavericks and other Mac troubleshooting issues.
Some users reports the following fixes their Mavericks problems:
http://forums.adobe.com/message/6109315#6109315
Troubleshoot system errors and freezes | Adobe software on Mac OS 10.x
http://kb2.adobe.com/cps/824/cpsid_82414.html
There was one update for Encore CS6 Mac. So make sure you have upgraded to 6.0.1