Welcome to the club… I was in the same predicement. You can simply uninstall 2.0.7, tell it to keep the settings. And then run the 2.0.6 installer. Make sure you ignore the update screen in 2.0.6 as it would love to upgrade you to 2.0.7 again.
I have already reported the 2.0.7 CLI bug, but so far have gotten no response. Sadly CLI broken seems to happen every now and then in a new release - I would very much hope for Topaz Labs to create a few automated tests in that area, so that it works every time.
