Hi, not really sure what may be the cause, but thought I'd see if my old mov file would load in PSP9. It imported with no problem. I had taken a video of my old 1960's Magnavox playing an LP, lasted about 2 minutes, and had the mov extension. The file was already on my computer, I didn't import directly from my camera. Did you try importing directly from your iphone or had you put the file on your computer? Tried an old avi file too and that also imported with no problem (this file was also already on my computer).