Hi Marina,
thank you for your post, it solved my problem as well:
I added to Library PreferencePanes:
Apple Qmaster.prefPane
Library Quicktime now looks like this:
Media 100 Codec.Component
DVCPROHDVideoOutputClock.component
FCP Uncompressed 422.component
DVCPROHDMuxer.component
Flip4Mac WMV Import.component
Flip4Mac WMV Export.component
DVCPROHDVideoOutput.component
IMXCodec.component
InstantMediaOSX.lib
Title2EffectOSX.component
Motion.component
Media100 HD.component
AppleProRes422.component
DVCPROHDCodec.component
Media 100 Transcoder.Component
LiveType.component
Media 100 VOUT.Component
Flip4Mac WMV Advanced.component
Media100.component
DVCPROHDVideoOutputCodec.component
AppleIntermediateCodec.component
DivX Encoder.component
DesktopVideoOut.component
DVCPROHDVideoDigitizer.component
AppleHDVCodec.component
TX
Fred Vanderpoel