Harry Potter Chamber Secrets ISO block size wrong?

[karmakarma]

I got harry Potter chamber of secrets for ps2 usa and it is an ISO file. using Nero 5.5.9.17 to burn image I get this error

"The entered block size does not correspond to the image length. The block size may be wrong. Do you want to correct the value or ignore the problem?"

I can't correct it so I ignored the message and burned the disc-- no dice (several times). So I gave up and downloaded it again from another place, also an ISO file.. same thing. Any ideas? thanks guys