Chakarum

Not sure exactly why, but I after I copied by UI from my old computer to my new one, my merchant window is strange. It is in exactly the same place and has the correct buttons, but instead of the newer format, where everything is listed, it went back to the older version, where things are in boxes (although the boxes are one on top of the other); the columns to sort things are gone. If I switch to the default UI, they are there. I compared the xml files, and cant see anything different, other than the size and location of my buttons. Any idea what can be causing this? I'll post my file if necessary, but not at home right now. Thanks in advance.