I have a simialr issue.
I used Nero to cpature my video because when I selected Capture within video Pad it opened Nero. Okay, so I captured and saved as an AVI for import into Video Pad. 4 of the 5 videos captured this way will not "import". I get a pop up with
Could not Open File:
location name.avi
SO, what is the possible issue. All the files are captured exactly the same from the same camcorder using Nero capture and saving as an AVI