I figured it out... Under environment, The WebVTT tick box, next to it is a file path /assets/. Remove all of the file path.

Thanks again for a great program.

Cheers!

Great program! I recently had to re-install it. Now when I run it no VTT file is being generated. Instead I get a .vtx file, which I previously did not get or need. I tried using the .vtx file instead of the VTT but no thumbnails are generated. I still am getting sprite image. The only thing off is ...