ScanTo3D disabled

Hi,

I have SW Office Premium and in tools -> add-ins I can activatethe ScanTo3D.
The ScanTo3D menu then appears under the Tools menu, but everyfunction in ScanTo3D is grayed out and disabled. It doesn't matterif I open a .STL file or .SLDPRT, it stays disabled.

Does anyone know what may cause this and how it can be solved?

Thank youSolidworksGeneral