There are tons of
CDROM ide1:0: CMD 0x28 (READ(10)) FAILED (key 0x5 asc 0x21 ascq 0)
error messages in the log file. Since you are using an ISO file, I think this could be an issue with a corrupt ISO file. Does the source from where you got this file provide a checksum (MD5, SHA1) which you can verify? If not, try to re-download the file to see whether this makes a difference.
André