Unable to import any kind of video

I'm running Windows 10 and the trial version of VideoPad. I am unable to import any videos. Whether I drag them in or click "Add Files" or whatever, they all give me the same error "Failed to load video". The videos work fine. They play fine in any video player and I've tried converting one to a few different formats with Handbrake, but nothing works. It's a real shame because I used VideoPad on another computer and really liked it.

Hi Perhaps it might be better to clear all the NCH files out and reinstall. Vis... If the error comes up check the task manager to stop the process running. Hold down the Ctrl and Shift keys and press the Esc key to launch Task Manager. (Or use Ctrl/Alt/Delete) Click the "Processes" tab and click on the "Image Name" column header. Scroll down through the list of processes to make sure the original program that gave the error message is not on the list. If it is in the list, click