CDRWin Burning Error!

[likwid8]

I always get this message right after 5%-17% when burning, and right before I start burning I restart, sometimes it bypasses it but most of the time it tells me the following error, the error states this!


"Bad Medium Detected"


And some other stuff but thats mostly the main key phrase, please someone tell me what that means, and oh yes it happends to me with all versions, thnxs, please reply!