Yeah it's exactly the same as on the XP box.
cl_ui_skinname Koko
cl_ui_subdir UI/
The bove is in the /sony/Everquest II/eq2.ini file and the .xml files are in the Koko directory /sony/Everquest II/UI/Koko.
Other UI interfaces work okay. I tried downloading them a couple of times and replacing them, but same problem. Copied the exact files over to XP box and copied over the files and worked fine. Tried using each by themselves and same problem.
What's really strange is that your Group interface works fine on both systems.
Thanks for the help.