Theres nothing around that program which mentionds 64-bit support. I wonder if that the problem??
Anyway, lets try eliminating problems with exe files
Download this zip file and extract it
http://www.winhelponline.com/fileasso/exe_fix_w7.zip
That will give you a file called exe_fix_w7.reg
Click on that once with the RIGHT mouse button, and select "merge"
You'll get a message about being successful, and if the problem is due to exe opening then you should be OK
But before you try it, just check the download of the expatshield file
Did you get it from the link I gave in my last post or somewhere else? There may be a hacked version out there on the file repository sites