PL 7 doesn't see my (installed) Nik 6

If I uninstall and reinstall it sees it for a while, leave it overnight and next morning PL 7 thinks that Nik 6 is not installed again. What does PL 7 look for in order to find out if Nik 6 is installed or not? Anybody know?

Hi Mark,
that sounds strange. Nik 6 had been installed and PL7 recognized it.

Do you occasionally/alternately use it with admin and user rights?
Wolfgang

Hi Wolfgang, yes I am guilty of that. I probably installed one as a user and one as admin,