[vdr] Why does vdr exit when I change channels?

[bob <bobself@charter.net>]

I finally got vdr running almost perfectly. I can select a couple of 
free channels on satellite by scrolling through the menu's list of 
channels. When I hit ok (enter) from the keyboard vdr changes to the 
channel successfully but then exits saying "Killed" on the screen.

Why does that happen shouldn't vdr keep running if you change channels?

bob