If you don't mind I'll answer to my own question and all the others still waiting for the fix.
Had to gather all the messages from the two related threads and guess the way, step-by-step
1. Uinstall Hamachi Adapter from Device Manager 2. Uninstall Hamachi 2 (leave settings checkbox clean) 3. Reboot 4. See if Hamachi configuration folder is still there if not copy back the folder 5. Run the installer from website and it should detect your original settings and recreate adapter as well
Since I broke my neck and cried blood over this over a number of days, I thought I might save a few grey hairs out there. This applies mainly for Windows 7 clients:
1. uninstall Hamachi via the control panel as with any other application 2. Start "regedit" via the command line interface (type "cmd" in the search bar), search and destroy all hamachi references 3. Reboot 4. Run Hamachi installer directly from the web link on your account on the hamachi web site