The first thing notable here is that the ‘Capsule Component (CollissionCylinder)’ has been replaced with ‘Root Component(x)’. This happened to me and my mesh stopped moving, and then disappeared with out any editable details. These components change depending on class, so it is a class issue…
If this component is inherited then the way I fixed this: Go through the hierarchy’s and re-parent your blue print to the character blue print. Then all you have to do is re upload your character mesh into that slot.
In theory, one of your hierarchy’s will display the root mesh in its components as apposed to capsule, and you can figure out which one is causing it as it may not be your character blue print. This way you do not have to create a new blueprint with work.
I think I triggered the error either through; Messing around with collisions/Actors/orientation or parenting.