well, I just copied a new categorized sh3t file into the data/textures folder and they all appeared when I opened the program in the textures list.

Tbh, I actually had to install the newest Scopia one 3 or 4 times before it finally worked. So something weird was already going on.

Also, for some reason, the Splash screen somehow changed to a very low res image. When I opened Portable5.4 the splash screen looked great, but for some reason the newest 6.3 is a really low res splash screen, maybe there's something wrong with the one I got.