Thu Jul 08 23:05:33 2010 ROUTE: route addition failed using CreateIpForwardEntry: One or more arguments are not correct. [if_index=16]
It turns out to be very simple to fix. In Windows 7 and I believe in Vista you need to do a few extra steps to get OpenVPN GUI to work with Windows 7. First you need to go C:\Program Files\OpenVPN\Bin and make sure openvpn-gui.exe is always started as Administrator (in the compatibility menu of the file properties). Then you will need to edit your configuration file and add two lines after the line that describes your cipher:
route-method exeroute-delay 2
That should do it. Let me know if you have any questions.