Hey I'm getting all black textures like the others,
I haven't messed with any of the scripts so I don't think I have the fullbright issue, and I've ensured that the CleanTF2plus-master folder resides in my custom folder.
All the vtf files in the materials folder seem to be generating, but they're all listed as 1 KB. I'm guessing there's that imagemagick issue mentioned in the troubleshooting document but I'm not sure what you mean by reinstalling, as there was nothing to install to begin with.
I've run the generating script twice to the same result. I said yes to all options.