I have the same setup. If you go to
http://vinylmasterpro.com/registration/re_register_vmp.htm
move the mouse pointer in a counterclockwise circle while patting you head and rubbing your stomach in a clockwise circle, you might be able to reregister.:Big Laugh I haven't tried it yet but disabling auto daylight savings time adjustment might solve the problem.
I've thought of upgrading to 2.7 to get the dongle but keep holding out hoping version 3 shows up. I've had two scary moments with it. Over a year ago my motherboard died and I was able to get it registered on another pc with the help of Shaun Maurrel. Also, just two days ago, I enable File and Print Sharing on the
computer with VMP and it deregistered, in the middle of a job that needed to be finished.
I've never had the problem you're having but if it helps, my offset is 0.250