“Warning A valid static mesh must be specified” error repo:
Load any standard level (I use the shooter framework example)
Look at a surface like a floor with the camera above it
Hold S and click on the surface with the LMB
This will usually cause a backward movement on the camera, but it will also cause a “Warning A valid static mesh must be specified.” error in the bottom right corner. If you don’t get the message, click faster in the same area.
This happens even when a valid static mesh is selected.
Ideal outcome: Static Mesh is placed where S + LMB is pressed, like some older versions of UE.
You can also see the same error message if you go into simulation mode (alt+s) and then S + RMB in the scene. Not that I would expect meshes to be added in simulation mode.