This morning I was attempting to record something quickly. I preseed REC (black button with red dot) on remote. I must have pushed something else as well because now all that displays on my TV is a still picture of the initial program and the word "Still" displayed in the middle of the screen. Nothing I do seems to change this in any way though I can tell that the DVR is functioning because it will change to other functions, but the "Still" picture remains. Please help. Thanks.