Drag file into xojo application

I get a no entry sign when I try to drag a file to Xojo, the program works fine on a mac, I have tried to run as admin on windows, anyone know why I get get a no entry icon as the cursor?

What are you dragging and where to?
(what kind of file, and where in the IDE?)

Windows may not allow dragging from normal app to admin app.

Dragging it from within a zip-file?