Hello! I had exact same problem.
If the "Filter script" run in the AppleScript editor I receive error:
error "System Events got an error: Can’t get current configuration of service \"FireWire\" of current location of network preferences."
In the "Filter script" i'm find line:
set srvList to get name of every service whose (kind is greater than 8)
and replace than 8 -> that 9
set srvList to get name of every service whose (kind is greater than 9)
Now all works.
Error in
Mavericks