Cyclic redundancy check



I have DVD’s that I have reauthored using AnyDVD and Shrink and Copy to DVD.

When I reload them into shrink, and sometimes CloneDVD I get Data Error (cyclic redundancy check) VIDEO-TS/VTS_04_1.VOB ( or similar).

What is this? I haven’t changed my burner Pioneer 106, software, or media.

The discs play fine, but I can’t rip them again.