Problem with the map editor.

Help me out, I used to use the map editor and everything worked. Now, when I try to reminisce, the editor for Tribes of the East doesn't respond to movement (both the mouse and keyboard work, but when I hold down the right mouse button and the arrow keys, nothing happens on the screen). In the vanilla and Gnome editor, everything works perfectly.

In what way, the camera doesn't move or the objects don't move?