Frame advance mystery

[mhoople]

I've had problems with smplayer only allowing the frame to advance 3-4 times in the past. Some months ago I changed hard drives and reinstalled XP. After that smplayers frame advance worked fine. Yesterday, I installed an audio program Native Instruments Battery 3 and updated the drivers for an RME HDSP Audio Interface. Today, for the first time in a long while, it now only allows me to advance the frame 3-4 times in Smplayer. Before using System Restore and getting the hassle of reinstalling Battery I'd ask if there are any theories as to what is in the two changes I made yesterday that seemed to have affected smplayer. Thanks