I uploaded a new version. It should work on 4.10. Please, verify and report back. I didn't have time to rerun it yet.
On 4.10 there was the same problem with .profile and rc.conf as described above. If you correct those, logout and login, restart postgresql and then:
su -l postgres "dropdb service0"
su -l postgres "createlang plpgsql template1"
su -l postgres "createlang -l template1"
su -l postgres "dropdb service0"
shutdown -r now
If that doesn't work, try again with the new port version (27-12-04)