Same problem with IE on my computer, I can't add new addon's, I can select them, but it doesn't add them, so I am stuck with native, so I am trying to get it so that when I click on a tower, that a menu appears at that spot, they chose the tower they want, then the menu disappears, but the game doesn't pause during the selection, don't want it to, that's where I am currently stuck with C3.