Bandwidth Monitoring throws error and does not execute

This should be actually 2 bug reports (one for Webmin and another for VM pro), but will try to do it in one anyway because I am not sure if they are not related...

In Webmin when I try to access the Bandwidth Monitoring module I get this:

require ipfw/install_check.pl failed :
Died at (eval 81) line 4.

In VM Pro -> "System Settings" -> "Bandwidth Monitoring" I don't get any execution errors on the module page BUT when I click "Show Usage Graph" all I get is:

No bandwidth usage statistics have been collected yet.

I have "Bandwidth monitoring active" for all domains I am hosting currently but don't get any stats on any of them. Monitoring is active already for month btw.

Status: 
Closed (fixed)