Bizarre Quicktime bug

[Richard Miller]

I need the help of any genius around here who can help solve a bizarre bug.

I have one customer (and only one) who is using my Rev video software on 
a PC and is encountering this bug. He actually has a laptop and desktop, 
both with Vista, and has this same problem on both.

1. Transfer a video from his camera to a flash drive. AVI or MOV... 
doesn't matter. We've tried both. These are all H.264 encoded.

2. Play the video file directly from his flash drive in QT. Plays fine. 
No problem at all.

3. Transfer the file to his desktop, then play it in QT. Corrupted. 
Parts of the video become distorted. It plays, but is obviously corrupted.

This occurs on both of his computers. We've tried this numerous times.

Now it gets a bit more bizarre. If we try to play one of the 
desktop-based video files in the Kodak playback software that came with 
his Kodak camera, it plays fine. The Kodak camera can transfer the video 
from the flash drive to his Documents folder, then play it back from 
there with no problem. But if the file is copied from the flash drive to 
the desktop by drag-and-drop, then played in QT, it is corrupted.

I have gone in through remote access to disable just about every program 
I could think of (on his computer) that might be causing this problem. 
The problem persists.

Any ideas?

Thanks.
Richard