I am sure it works. Not sure what is going on with your boards. I am fairly sure you did not by version 6.x threads 2 years ago for any price as 2 years ago the only one you could actually perchase was the 7.x versions.
However, something is going on with your install then, and you may have to wait for Giz or SD to look at what your error is. I would take a look at the possibility of a corrupt file upload and would try to DL the software again just to be sure.
