[want a be]

I took a 11.6 MB AVI video using the same 4MB Pentax Digital camera mounted on my Orion SteadyPix. The frame rate of the AVI is 30 Fps with a data rate of 395 Kbps..When I tried to load the file in Registax ver 4.0, I get a error message saying " Failed to Start AVI decompression"... Can anyone tell me why it won't let me load that AVI file? I can load a Jpg file and view and adjust the picture...What type of AVI does it have to be or does the Frame Rate or Data Rate have sometime to do with it? Still learning...