Check your acklog and see if any errors.
I could be wrong but I think video files have to remain in the main exe folder.
Check all your included paths.
Check spelling of the paths.

Well that's a start laugh

Windows XP SP3
Intel Dual Core CPU: E5200 @ 2.5GHz
4.00GB DDR3 Ram
ASUS P5G41T-M LX
PCIE x16 GeForce GTS 450 1Gb
SB Audigy 4
Spyware Doctor with AntiVirus