I did a complete fresh re-install of WoW and I try to put a new UI in, and it still doing exactly the same- Looks exactly as the old UI I had.
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Here is a setup of my folders, account is on CAPS - and after Servername I have my character's name (Ex:Roburter)
http://img131.imageshack.us/img131/4717/30282111ib7.jpg