Problems with WheeledVehicle Derived Blueprint

Development Programming & Scripting Blueprint
1

I have created a Blueprint Class derived from WheeledVehicle to setup a vehicle in my own project.

I have followed all the steps in the Officiel UE4 “Overview and Car Setup” Video (Vehicles: Overview & Car Setup | 01 | v4.2 Tutorial Series | Unreal Engine - YouTube), but I cannot get it to work.

If I follow all the steps, and also create a new GameMode and assign the WheeledVehicle Blueprint as default pawn, my camera starts to go haywire for a second and then the camera is black (most probably the camera is attracted to the vehicle mesh anddisappears in it?.. no matter if the cam is on the spring arm, directly attached to the vehicle or static in the level. Even deleting the cam and relying on the default cam leads to this problem.

Now, I haven’t used a GameMode before and I am not sure I actually want to use it… so I removed it. And the camera starts to work again. But the mesh of the pawn is no longer visible.
And after further testing, same Problem as when the Pawn is set as defaultPawn in an active GameMode is actually also happening when “Auto Posess Player” is set to “Player 0”. I guess the Mesh is visible now, cannot tell as the screen goes black in seconds.

  1. Why is the Mesh not visible when nobody is controlling it? Is that normal behaviour of UE4?
  2. Why seems my camera goes haywire, even the default one, when somebody is controlling the pawn?

Thanks in advance for any help!

2

Did another test this week… I migrated the whole sedan directory from the vehicle starter project into my project. Made sure the blueprint runs fine in the original Project.

I placed the sedan blueprint in the scene in my Project, and it seems it suffers from the same problems. So it doesn’t looks like its something with the blueprint, but with the project… Any ideas how I debug this? I wouldn’t want to recreate what I have done until now from scratch, as the level design took me some time to get right.
Is there any way to find out what could be the problem? Should I back up the project and start dissasembling the scene until the Blueprint works again?