JJMACK Mockup Script issue

I recently began using this script about a week or two ago and it worked fine for my mockups.  Today i tried to run it and am now getting a script error "no files found".  I have verified the mockup templates are in the right folder as well as the images in the obj0 folder.  I made no changes between the first batch which worked and the second batch that didn't and have doublechecked the settings are correct for the folder locations.  Any help would be greatly appreciated and I'm happy to provide any information I can to help troubleshoot it.

Thanks