You have plenty windows there G-Man.......my guess is that you duplicated the first one and perhaps added the rest using the same brush. This works fine except you must watch out for a few things...
1. Make sure that you don't cause "double actor class" errors....to find this out, click on each mover seperatly and make sure that when you select its properties, it says that you have "one" brush selected. Sometimes for reasons unknown to me, the brush or mover, playerstart will duplicate itself when you try to make a copy...ineffect producing 3 copies. If you find this problem has happened just select delete, and the count will go to "one" brush selected....press "rebuild"
Also checkout the samething for your exploding glass actors....it happens to them too sometimes when you duplicate them.
2. If everything is clear there, make sure that none of them share the same "tag" name. You could check each one or go ino "overhead" view and make sure each glass mover has only on red line to it....if it has two, fix it.
3. Make sure that the "exploding glass" actor is not inside you glass brush. Place it next to or infront of your mover...this has happened to me and it screwed eveything up. Never place these types of actors inside of anything...they always should be hanging free. Besides, if your "glass" actor is inside or infront of the glass mover, you won't notice any differance.......
Hope this helps........Cheers!