Thanks, everyone, but no, it's not the problem I am having.  I use external Runtimes for everything that is not P7 specific, so I don't have a problem with those.

The problem is that I can no longer find P7 to install anything.  Smith Micro doesn't show up as a choice...and  the eFrontier folder is empty.  (When installing you have to choose a path...well, neither path is there!)

I guess I could create an external P7 runtime...but some files object to that...so it's a conundrum.