[vdr] Can't change audio pid

[slawe <slawe@europronet.hr>]

I can't change audio pid from OSD menu. For example :
1st audio pid is Italian 401
2nd audio pid is English 402
When I reverse them with Edit command drom OSD menu and pres enter there
is a picture with chnged audio pid for about two secs. Then the picture
is restarted with the "normal" settings of channel like i haven't done
anything. It semms I can't write to my channels.conf file.

Any ideas??
I use vdr-1.3.1