Please select the wanted extension?

Hey. I just added the "Mouse" object into my game. Now, every time I try to run the App, or save it, I get this question:

"Several extensions correspond to the type of one one of the objects dropped. Please select the wanted extension, and click OK"

Then I get to choose from the "Directional calculator" and the Mouse object.

What is this message? Is it an error?

I've now completely removed the mouse object and the message disappears. However, I would really like to use the mouse object.

It sounds like a conflict between the directional calculator and the mouse object. Maybe they use the same extension id?

As far as I know, the object identifier should only be used for identifying a window belonging to an object.