Sorry, but then more information are required. Maybe they get hidden somewhere...
You can check it out at
http://www.oxivisuals.no/clients/obos/roakollen/moviemask/
the 4 XML files are all located at the root, all pano images are in the pano folder.
XML filenames: main.xml, a7002.xml, c5006.xml and c8001.xml
The action changeappt() in main.xml handles the loading, and is called from each of the 3 hotspots in the main tour. Click on the MovieMask icon in the toolbar and you'll see I've added a green button between the LEFT/RIGHT arrows - this takes you back to the main scene again - using changeappt.
If you go into e.g. C5006, then back, and then into c5006 again, you'll see that the hotspots dissappear the second time. However, when going back to the main scene, the hotspots are present (the 3 blue frames around each apartment image).