Problem starting Resolve 15 - Server not running or Passwor

I was using Resolve 14 and intended to install 15 Studio on a new machine and move the dongle to that machine, but after installing I get the error message below.
"postgresql server is either not running or the password is incorrect"
I found this post, but it doesn't seem to be applicable.
viewtopic.php?f=21&t=66747#p377110
"postgresql server is either not running or the password is incorrect"
I found this post, but it doesn't seem to be applicable.
viewtopic.php?f=21&t=66747#p377110