Railworks America

Hi again. I'm afraid I've run into a little more trouble with RW3. I bought the Class 170 Pack today and installed it into RW3, but when I went to play a scenario, I get a message saying that the game was unable to load the Class 170 because they are broken consists. I did a cache verification, but that didn't help either. Is there something I can do to fix this problem? Do I need something for it to work properly or do I need to install it again?