Yes, it's a quite common issue, you need to set an application name when using VLC :
- create a directory "live" (for example) in the "www" directory of MonaServer
- use rtmp://<ip>/live/test to connect to the stream with VLC
With this version :
- you don't need to create the "live" directory
- you can also play a stream with HTTP progressive download => from vlc or the browser open http://<ip>/test.mp4 where ".mp4" just tell the container format to use for transport (supports also .flv and .ts formats).