I know this is a late response, but I’ve had this problem for some time. I found something that works for me and am trying to get this fix posted wherever I can. I found this info in a post on the Adobe forums – there is a “Secret Preferences” setting:
1) Hold the shift key
2) Edit/Preferences/General
3) Release the shift key
4) Previous
5) Secret! Voila!
I selected “disable Layer Cache” and set it to Purge Every 10 Frames and it not only took care of an “unspecified drawing error”, but I am now able to render wmv files with no problem.
I wanted to let you know about this so you can tell others that have the same problem.
-HJ