CompuServe Messages

Well I finally had a successful session with AS. I just couldn't do anything with the AVI files that I had produced with Visual Reality and Renderize so I decided to try creating a series of JPG files instead of an AVI. I read the JPGs into AS and spliced and edited to my hearts content. I merged movies, I saved to AVI format, all without a hitch. You don't know how close I was to throwing this stuff back to my dealer… Any idea what could be causing the incompatability with the AVI files?