For SARS, make sure you remove any window_piecesXX.tga that are not in the zip (from the custom SARS folder). SOE added pieces 10 and 11, so I had to move the extra SARS ones to 12, 13, 14, and update the EQUI_Animations.xml for that accordingly. You'll not want the old ones in your folder interfering with the ones provided by SOE in the default folder.
htw