Apple is aware of this issue with QuickDraw GX v1.1.3 software. It will be fixed in future versions of the software. In the meantime there is a workaround you can use.
Workaround
Change the init loading order. Make QuickTime load prior to the GXGraphics extension.
For the most current information on what SDKs Apple offers, point your web browser to:
http://developer.apple.com/sdk/