I purchased and have been using v2.04p2 for some time. I had to reformat my hard drive for other reasons. When I reinstalled LnS, I inserted my serial number, pressed validate. The program suddenly no longer validates the number. I checked the numbers I entered and they match the serial that I was sent. I have uninstalled the program, reinstalled it, no luck. I even installed the new version 2.05b1. I cannot get the program to validate the serial number. What's going on here? Thanks.