I'm getting a "version has expired, download latest" message when I start PT3. Latest version is the one I got. It was an inconvenience during beta, BUT I PAID FOR THIS.
You just need to re-download the same version you are already running. See this post: [ur l=http://www.pokertracker.com/forums/viewtopic.php?f=15&t=8384#p38556]Build 2 Expiration - Extended[/url]