Hi,
I had the same issue. I had to download another copy and reinstall! remove all the files first, then check the location to make certain it removed all directorys containing hal files. see if that works.
A moderator should answer this post as soon as they can, so give that a try in the mean time. oh dont forget to download via site not the account download! I dont think the account download has more than one copy. You will be downloading the same corrupt copy!
hope that helps a little!
colubragens aka 2BiT