Recorded Programmes?

Finally after five days have got all the channels back on my Thompson digital box.

Now however we have another problem. All the programms that we have recorded over the last five days and before the box went faulty, have been saved on the disc, but when we go to watch them there is just a blank screen and nothing will play. Does anyone know if we will be able to watch these recorded programmes or will the disc have to be wiped clean yet again for the fifth time.