hrmm.... the object isn't a mesh.

I select the object (after creating w/ Add / Cube / Small)

Go to Mode / Edge Move

and there is then a check mark next to Edge Move (so I know it's in the correct mode)

but the vertex do not turn yellow, the object looks exactly the same as when it is normally selected, no visual change whatsoever.

I can even manipulate it like you should be able to in Edge Move mode but I can't see the vertex and there isn't a visual change so it makes it very difficult to manipulate the box.

Sorry to be a pain I just can't figure this out.