Pretty sure the servers are having issues right now (on Hamachi's end). I am having the same issue and this is the first time in over a month. In addition http://downdetector.com/status/logmein says that there are 8+ reports in the last few hours of connection issues being reported. Probably best just to wait it out and hope they fix it soon (or submit a ticket).
Also: Check the last day or so of posts, there are 2 or so posts that resemble this problem as well. "VPN Bridging Problem"