While I was installing the battlefield 2142 demo, there were one error after another that says "MD5Error:E:\Battlefield 2142\pylib-2.3.4.zip, retry? Yes/No." When i press yes, the same message pops up three seconds later. If i press no, it will skip installing that file, and move on, where it will have new errors similar to this e.g. "MD5ERror:E\Battlefield 2142\Weapons.zip, retry? Yes/No. So I skipped about 5 of these messages, and no surprise, the game crashed after 5 minutes. Any Solutions????