I also have a receiver that does this. I believe it happens because one has to have the remote. Normally using the back button on the remote will cause the receiver to save whilst exiting. If one is trying to do this with out the remote, from the front panel only, then there is no back button which prompts the receiver to permanently store the channels scanned. This is why they get lost on power down. I am still looking for a remote control for one of these! I presume the error code 1017 indictes that the channel scan has not been saved
Trevor Austin, August 2005