Hi there,
Unlucky this is a know-issue with x64 systems.
The problem seems to be SQL, I can just suggest you to download this:
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=e24ade0a-5efe-43c8-b9c3-5d0ecb2f39af&displaylang=en
***PLEASE BE SURE TO READ AND UNDERSTAND WHAT'S WRITTEN IN THE ATTACHED DOCUMENT (README.DOCX)***
let me know if you need further help.