If you mean Environment -> Video rendering -> Engine2, that didnt helped. i got the same "failed" message and Diag.log showed "cant render the file".
No, i mean "Extreme engine" in v18.104.22.168.
I installed on another cmputer a fresh winxp, installed framework 2.0 and installed video thumbnails maker. Then i tried to find a video which was playable in windows media player and tried to create thumbnails -> No success, still had the same errormessages.
The program still needs codecs.
Then in installed the K-Lite Codec Pack and checked videos if the play well wih Windows Media Player, but i still got the same errormessages as before when i tried to create thumbnails. What shall i do now? Try to install it on a 3rd computer? Try to Install the program on a computer with Win2k, Vista?
Try to install another codec pack. Or Try to install another version of K-Lite Codec pack. Try to install K-lite Mega Codec Pack.
Using of "Extreme engine" should solve all the problems.