If I place this file GIMPPortable.exe in the root of my USB drive then it returns an error when run:
"H:\GIMPPortable\Data\settings was not found. Please check your configuration."
Once I've created this folder, then it works.
I downloaded the ZIP version of this today.
Please note when creating zip files, you can't have an empty folder within a zip file!
So it probably got left out when you guys made your zip file!
Cheers.
You can't move GIMPPortable.exe until you run it at least once. The directories are created automatically at that point. This applies to both the Zip and self-extractor.
Sometimes, the impossible can become possible, if you're awesome!