2.66? isn't that even an older version??
I got 2 versions on my pc. 4.5 and 4.9 . I been having issues getting the backbuff to work when i load certain meshes. your JJprise v6 for example. one day i loaded it and found the backbuff was no longer working. i had to load the setup i had of the jjprise over town and work with it. ever encountered that problem?