Whenever a cell is active in edit mode (when user enter a cell with the blinking '|' ), running any macro that contain excel application method calls causes a runtime error "1004: method 'SomeMethod' of object 'excel application' failed" . However, when I go to debug mode, and just continue execution, everything works fine. It seems like Excel is busy waiting for the user to finish editing the cell and I can't make it do anything. Any advice?