What version of Videopad is being used? Have you applied a speed change? What type (format) of files make up the project?
If you share you project, someone here will check it out and often come up with a fix. This isn't difficult and can be done privately. Just follow the instructions in this FAQ...
http://nch.invisionzone.com/topic/23659-tips-for-getting-help-on-this-forum/
If it contains sensitive material link it in a personal message (PM). Click the envelope above. It won't be passed on or retained.
Use FILE|SAVE PORTABLE PROJECT AS, not simply SAVE PROJECT, and don't forget to share it.