So the script is looking at jpg files first and run some PS actions for tif files. After I get that PS message, the script fails to run and gives me an error message(Error 8000). That's it. I'm not sure if it's a script problem since it works fine when I run the script for the internal files. It's only not functional when trying to run for the external files as I mentioned above. At first, I was thinking if it were a permission issue but the files are writable and readable.


What OS are you running and what format is your external drive?
Judging by your screens, I'm guessing Mac OS. If Catalina - you're going to have issues with externals if they are not reformatted to the proper Catalina approved format.