Jochen.. The DATE math is not mine, and I even said I had doubts as to whether or not it was valid.

As for my code not working on v3.6x I doubt that too. All the code callouts are valid for v3.6x

In fact your specific call to a HARD CODED file location is an opportunity for the code to fail. Not blaming you, as you are only supplying what DJ gave you. However, a call to the REGISTRY should always find the correct information/location regardless of which drive it was installed on.

DJ... If you tried my code, it should work to at least tell you something. The math... is still all your code and I have not tested that.