Do you download directly or do you use torrent?

If you use torrent, make sure you delete the torrent from the torrent list and also delete the EB1.1.exe which is corrupted so the program really loads again "from scratch".

Or try using a different torrent program which has an included MD5 check, granting your file is 100% fine. And if only a part is corrupt, these programs usually only redownload that corrupt part (I use utorrent mainly, as it's very small (290kb), very effective and comfortable, without being cluddered with crap no one needs.