Recording problem

Last nite i was working so i set my box to record touch on sly 1 gold rush and deadliest catch on discovery. I have just got home and when i switched on the tv to watch one of them. Now, all 3 programmes are showing but when i try to watch them it says the length of recording is 0.00?? I also had a message on the tv when i switched it on but not sure what it was i just hit the menu button. I have been recording and watching with no problem before this.

Drive is there and not full, in fact its empty lol. I think the problem may have been when i came home and switched on the tv the was a message on the screen, something about DVB cant remember now what it said but it was just black screen.