I'm using a picamera with the picamera python libraries.
If my code calls the start_recording() method then the process will lock. I can kill the proces and restart it, but the start_recording() method will lockup the process every time. I can still run raspi_vid and it will record a clip, so I think the problem is not with the camera board.
I've added print statements to confirm that the issue is in start_recording, i.e. everything works fine up to that point. The code never returns from the start_recording call. Also, the process does have permission to write the video file that is specified in the start_recording call.
I searched the forums and google and haven't found a solution or similar problem.
Any suggestions on how to troubleshoot this would be much appreciated.