Originally Posted by Qualtar

You have that problem because a file in your playerwindow is named the same as the one in the pet window.... go into the EQUI_PetInfoWindow.xml file and rename PW_STRNumber to something like PetW_STRNumber and then rename the <pieces>PW_STRNumber</pieces> to </pieces>PetW_STRNumber</pieces>.

That should fix your problem