Have noticed when installing other security tools when using v7 of ESS, that there appears to be an issue with the firewall.
When installing Spybot S&D (spybotsd-2.1.21-SR2), pop up for firewall appears and when you tick the box to remember your choice and press ALLOW , gives the message "Failed to read firewall configuration". Cant remember offhand what the other applications were but they are all display the same message when the firewall is on INTERACTIVE mode, i cant say if this applies to automatic mode as i don't use that option.
Might have been hitman pro that gave the same error "Failed to read firewall configuraton"
Also spybot fails to load one of its services at the same time when installing