Help watch live

[Drew112]

I am using a prv150 and when ever i try to watch live TV I get the message error object reference not set to an instance of an object.
I have run the tuning assistant which tunes in the channels great, I have then entered the channel numbers in to source channel column under capture source in the configuration is this right please help.

[sub]

Try setting deinterlacing to 'none', or disabling live preview mode.

[Drew112]

deinterlaceing was set to 'none' disabling live preview mode changes the message to failure playing back file