Socket error caused by firewall even though program is "trusted"

Comodo Internet Security - CIS Firewall Help - CIS
1

I have Spideroak.exe as an “allowed” application under firewall tab (and HIPS) but despite this I get an error: 10013 socket error when starting the program. If I disable the firewall the program loads normally and when I re-activate the firewall in safe mode Spideroak continues to work normally.

Any ideas?

Alan