UT2003 backup problem

[Fiery]

I noticed that several other ppl have allready asked questions about this but doesn't answer my question. I have a backup but I can't get it to work. I've tryed burning it and tryed with daemon but it complains about a syclic redundancy error while installing. The weird thing is that on the cd version the error comes much later and on emulated version it comes quicker. Is this a daemon setup problem or did I fuck up the backup?

thanks in advance

[Copytrooper]

Looks like a bad image, re-create from your original, and try lower read speeds.