(Win7) This mini-service appears easy enough to install, once you figure out the process:
1) move the exe to somewhere in your %PATH% or update the %PATH% with the location
2) open a cmd AS ADMINISTRATOR, even if you already are (avoids Error 5)
3) run your INSTALL or REMOVE with the right printer name exactly (see the Readme)
4) add a firewall rule for TCP 9100 incoming It should work from there.

Features in a quick test appear to be exactly what I needed - no silly frills, but all the requirements covered well.
Don't remove the binary or revert your %PATH% until after removing the service!
There's one untouched support ticket in the queue now, from 6 years ago. I worry no one's watching that queue.
