Unable to connect to a mapped network identified by hostname

I’m using the Comodo Suite 4.1.150349.920 and the Firewall doesn’t allow me to connect to a mapped network on Win7 that’s identified by its hostname.

I’ve added this hostname to the Network Security Policy but when I try to connect I receive a ‘the network path was not found’ message.

If I add the IP of that network (or if I disable the Firewall) everything works fine, but I’ll need to identify it by its hostname, like up until now.

Am I missing something or is this a bug?