Audition always stops recording on its own, Why?

I often make 4 1/2 hour recording in one piece.
Sometimes Audition just stops recording and I could never re-produce it.

Now I noticed after a while experimenting with it:

I can record two times 4 1/2 hours in one piece and after that it crashes after about  1h20 minutes.

Total recording time is about 10h15 - 10h20 minutes, then it has to crash and then it continues normal after re-start

WHY???

I made a screen copy

After Audition stops recording I have to press the stop button, and then only switch off Audition. Then Audition crashes and then I can re-start it to work fine...