Need help with a window focus problem

I've recently re-installed FS9.1 after a hard drive crash.I re-installed Active Camera 2.1 after I received the unlockkey from the active cam team.The problem is when I wish to load up a pre-defined setupthe active cam window comes up behind the full screen Flightsim, this takes the focus of the Sim and I have to do a ALT-TABkey press to get the the active cam load screen which is behindthe flight sim screen.To load the pre-set I have to then go into windowed mode onthe sim. I've seen this problem before a couple of years backbut can't remember how the behavior was stopped.This is happening to all third party addon's.Can anyone throw some light on this please?CatmarP.S. I did a search on the forum but came up empty.TIA