Do you still have the blank recordings? You may want to try rebooting the DVR... Many users have reported being able to play the recordings after rebooting...
edit: also, submit the info here.... http://www.iamanedgecutter.com/Projects/BGRecordings/
directv is gathering as much info as they can on blank recordings to try and prevent them in the future...
edit: also, submit the info here.... http://www.iamanedgecutter.com/Projects/BGRecordings/
directv is gathering as much info as they can on blank recordings to try and prevent them in the future...