Ok, here is the Temp fix till I can update the files again.
Make a new folder in the "C:\Program Files\Sony\EverQuest\uifiles" (unless your EQ is installed in diffrent path) and name it "Temp".
Now double click your "default_old" and go into the folder. Now hold down the "CTRL" key and press the "A" key then release both. Now you should have selected all files.
Now right click one of the highlighted files and a menu comes up....