I have started the tor service with no issue on whonix-ws and anon-whonix (although both won't connect to Tor because of this issue I'm having). I can also confirm that I have a connection on sys-net to clearnet just fine.
When I try to start the tor service on whonix-gw I keep getting the following error. I have used sudo service tor start, sudo service tor@default start and one or two other commands but no luck.
user@host:~$ sudo service tor start
user@host:~$ sudo service tor status
● tor.service - Anonymizing overlay network for TCP (multi-instance-master)
Loaded: loaded (/lib/systemd/system/tor.service; enabled)
Drop-In: /lib/systemd/system/tor.service.d
└─30_qubes.conf, 40_qubes.conf
Active: inactive (dead)
start condition failed at Sat 2017-03-18 15:27:04 AEDT; 2s ago
ConditionPathExists=/var/run/qubes-service/whonix-gateway was not met
Mar 18 15:25:08 host systemd[1]: Started Anonymizing overlay network for TCP (multi-instance-master).
Mar 18 15:27:04 host systemd[1]: Started Anonymizing overlay network for TCP (multi-instance-master).
I am out of ideas and hoping someone else has come across this before.