Cycle Redundancy Check?

Im very lazy when it comes to changin disks etc. so i put them on the comp as DivX. Normally what i do is open the DVD with WinDVD Plat so that its unlocked, copy the disk to HDD, watch the film from DVD whilst its DivXing, lose the disk in a cardboard box and just watch the DivX.

I copied the DVD to HDD fine and was moving it across the network to another PC but couldnt because i kept getting:

Data Error: Cycle Redundancy Check

or something like that.

What is this? Is it something todo with the file? I have had this before when DivXing with No1. DVD ripper too.

Any ideas on how to stop it?

Thanks,
Stuart.

 

Sone sort of file corruption.

http://computing-dictionary.thefreedictionary.com/cyclic redundancy check