trying to encode a Divx DVD rip w/ TMPGEnc & keep getting this error message: "can not be used as an external encoder" What does this mean, & how do I fix it???

Btw, was using this guide: DivX to VCD MPEG All-In-One Guide http://www.vcdhelp.com/divxtovcd.htm.

Thanks in adavnce!!!

Update:
Fixed this by renaming the source file from - The.Godfather.Part.1.CD.1.DVD-rip.DivX.HoSTiLe - to - The Godfather Part 1 CD1.avi

Hope this helps someone else down the line!!!