Quote Originally Posted by fehers_78
... When I downloaded the ISO file I unpacked it (with WinRar)....

The ISO file I'm using now is what I rewrote with NERO and it is now 730MB. I remember the file being under 700MB (about 695) when I downloaded it so this is what makes me think the error message is because the original ISO file was different than the current one I have done with NERO.
You never "unpack" the ISO if you plan on using it.

You can know completely that you have a good ISO by running the md5 sum test against the md5 file that came down with Bittorrent (or is available from the mirrors i you still use 20th century technology).

See answer #1 for details.