CompuServe Messages

I never really tired this with only one clip What would be the point. I have reformatted the drive. >>only after many file deletes and optimizes and a long time since you >>last reformated? I usually have 30 to 40 short clips. Then I combine 20 of them into 1 Clip and want to leave blow away the 20 and leave maybe 10 clips behind.. Then I compress so I can capture and merge another 15 clips or so into the final. After this compress my remaining clips as well as the one I made is corupt.. Not the whole clips just individual frames in the clips.. Its makeing me goofy any ideas ?? Thanks Bob..