Weird image showing only during cinematics

Hi, can anyone tell me what the hell this is???? (screenshot is attached to this post & I'm talking about the purple squarish thing on top of the guard tower)

It only appears during cinematics and doesn't show in the Worldeditor main window. Is there any way to remove it??

Thanks in advance

It looks a little bid like a unit portraitmodel but im not sure. But i think you must've placed something there.

But if it is a unit, I should be able to see it in the main worldeditor screen too shouldn't I?

Maybe, idk. Try dragging there in the world editor and see if you catch something.

Well, I did, and nothing...
Dammit! I have been spending a lot of time working on this cinematic scene and now THIS stupid thing ruins it!@$%

It's the tower playing portrait animation for no apparent reason. Base tower off another unit and you won't have problems.

You, Sir, are indeed TotallyAwesome.