Tvheadend

Hi
First tvheadend is a great program. dvb-s2 with 2 satellite cards works perfectly. Recordings via the web interface programs work great.
I have a problem when streaming tvheadend recordings via XBMC. When I start the recording will stop playback after 30:31 minutes. I still ended up in the XBMC main menu. I try now to start recording again XBMC asks me if I want to start at 30:31 again. When I confirm this I still ended up in the main menu. I start recording from the beginning I fly right back at 30:31 back to the main menu.
But if I start recording from the web interface of the film about VLC is running perfectly. Where is the problem?