Just a quick look, but it appears that EQ is not seeing the path correctly (just call me MOTO)
Your directory structure should look like
C:\Program Files\Everquest\UIFiles\Soes\<a grunch of files here>
The above assumes that you unzipped the UI into a directory named Soes in the directory named UIFiles in your EQ directory.
Any folders inside the Soes folder will not be seen by EQ, therefore the UI will be "broken".
Hope this helps