The folder structure is px->u01-> and then the zip files that are 02 through 15. Is there something else I need to do?
There's a category folder between u01 and the individual .zip files. For example:
/px/u01/15 Synth/<zips here>
The category folder name must exactly match one of the 17 supported categories:
01 Ambience
02 Bass
03 Brass
04 Choir
05 Cinematic
06 Drums
07 Effects
08 Ethnic
09 Guitar
10 Keyboard
11 Percussion
12 Tonal Perc
13 Piano
14 Strings
15 Synth
16 Vox
17 Winds
Are you sure this wasn't already part of the folder structure you downloaded originally?