Follow these instructions and you no longer will need the .sdp file (the instructions in this forum thread are for connecting to a native RTP stream that does not use RTSP announce - QuickTime Broadcaster supports RTSP annouce - please, please follow the instructions in the first post of the thread at the URL below):
http://community.wowza.com/t/-/42
In the next patch I will change it so it only reports the missing file error once when using the native RTP method covered in this thread.
Charlie