meshFromCamera example not running


I have started learning oF and was trying out some examples in the examples folder. The meshFromCamera example inside 3d is actually not working for me and I see a blank grey window with the fps being show on running the example.

I am running oF on Code::Blocks in Ubuntu Linux (12.10). The console however shows the warning on running
‘’[warning] ofGstVideoUtils not loaded"

What’s going wrong here? Other examples are running fine for me.

UP !
same problem
can so give a clue

thanx guys (and girls)