DSL-N :: Problems downloading DSL-N CD

I've downloaded dsl-n-01RC4.iso and the md5sum checks out. However, I cannot burn it to CD using the windows version of Nero software: it says it is not valid iso image!

Does that mean there was a bad image when someone created the md5sum? Would it do any good to download it again?

I tried that and received the md5sum is that same (again). I tried running nero again and this time it says "unexpected file format".

Hmmmm... what is going on? I've burned a lot of linux DVDs and CDs using Nero's Burning software (on windows) and I have never had this problem before.

Anyone have any suggestions?
thanks,
Siegfried

original here.