On Sunday 17 of June 2018 18:53:34 Gene Heskett wrote:
> So I tried setting it back to jessie, but all that got me was a sea of
> red or outright refusal to even mark it for install.
>
> Stretch has been out for quite a while, so whats the magic potion folks?

Did you set up apt source for Preliminary Stable Builds? Here is the Release 
file properly as it should be. See: 

  http://mirror.ppa.trinitydesktop.org/trinity-sb/dists/stretch/

Cheers
-- 
Slávek