The last week I've experienced an error message with ESS on my W7 Pro 32-bit install. I run ESS in interactive mode and everytime I connect to a VPN i get a message box which says "Invalid argument encountered". After that I can't get rid of the window (for allow/deny) communication. It doesn't matter if I click allow/deny or if I try to make a rule. The window does not go away. I can click a button on the "Invalid argument encountered" window and then that one closes at least. Any thoughts on this matter? So far I've tried the following: 1. disabling self defense at least allows me to get rid of the ESS interacctive ddialog window. 2. Completely uninstall ESS, reboot, registry clean + file cleaning (in app data, roaming profile etc) manually 3. Reboot 4. Deleted my VPN-connection and reapplied it in a new connection = same problem When I reinstalled ESS I exported/imported my config file, can something have gotten wrong with my settings etc? Thankful for any response to this annoying issue.