No program library?

I have lost the program library for my Thomson DTI6300 Freeview recorder.

So I can not watch any of the programs I have recorded cause it says they are not there.

It says I have an empty library even though up until last Friday I had used about 55% of my memory.

It keeps trying to record programs but then I get the message 'Recording Failure'.

Does anyone know how to get my program library back and how to get the thing to record again.

thanks