If feasible, share your project so someone can check out your issue. Here's how...
1. In Videopad click the FILE menu, then SAVE PORTABLE PROJECT AS. Save to any convenient folder.
2. Open the folder that contains the saved files and ZIP them all.
3. Upload the zip file to DropBox, Google Drive, MS OneDrive or the like. It's free.
4. Make the uploaded file public (share it) and copy the shared link.
5. Paste the link into this forum.