QuickTime will not play wmv or sometimes mov files anymore

I have the latest QT and OSX software. I also have Perian installed. I upgraded my Flip4Mac to version 2.4.4.2 recently and now my QT will not play wmv files and sometimes it will not play mov files. I've never had trouble with QT before and have learned through online research that there has been an issue with a 3ivx codec that comes with Divx that everyone says to remove from the System/library/quicktime folder. I checked, and I didn't have that particular codec listed. I DO, however, have ALL of these codecs listed in my QT folder:

AppleGVAHW.component

ApplePiletVideo.component

AppleProResDecoder.component

AppleVAH264HW.component

QuartzComposer.component

QuickTime3GPP.component

QuickTimeComponents.component

QuickTimeFireWireDV.component

QuickTimeH264.component

QuickTimeIIDCDigitizer.component

QuickTimeImporters.component

QuickTimeMPEG.component

QuickTimeMPEG2.component

QuickTimeMPEG4.component

QuickTimeStreaming.component

QuickTimeUSBVDCDigitizer.component

QuickTimeVR.component

This seems like a lot of codecs, many of which I am unsure about. Could ANY of these be causing my wmv files (or my Flip4Mac) to be corrupt and unable to work? I appreciate any insight you may have.