Thanks.
Not knowing how "to upload source code", I made a new project with 2 frames + hotspots. I set the plugin as in my game, - and it worked fine! So I went back to my game to look for the difference, and realised that the inventory items were missing. That made the difference. With items in the inventory the plugin does not work. (Nor does the inventory appear/disappear progressively)
To get this to the forum, I compiled it, but realised that I've never compiled an AM-game before, and have to learn what all the options mean.
The .exe was impossible to add as an attatchment for some reason, so I downloaded a zip-programme and zip'ed it, and hope it's possible to open, and that this is fixable.
PS. Perhaps a zip-programme could be among the useful extras in the future?