Hi
This is a VERY old thread (5 years) ........:o
However, what version of VP are you using; the latest is 7.24 for Windows
How are you adding your clips and images and what format are they?
Exactly what are you seeing when the clip/image is loaded to the clip bin or the timeline?
If you don't see a clip preview once you have added it to the clip bin and selected it, there is a problem
The same applies if you drag/drop (or otherwise place) the clip on the timeline and you don't see a clip preview or a sequence preview.
You could try....
Open the file User/AppData/Roaming/NCHSoftware and delete the folder Components.
When you re-open VP the components folder will be re-downloaded. If any folder had been corrupted it should have been restored. Worth a try. If you still have the same problem, completely uninstall VP (including program Data) and then reload it from your vpsetup.exe file which you have kept from your original install. You may need to re-enter your registration code.
If that fails to get you back to normal then uninstall it once more and download the latest version.
https://www.nchsoftware.com/videopad/versions.html
Nat