Yes, the actor I originally selected was a character blueprint I had created. It has a camera, capsule, animation BP and mesh.
When I created the first ability in this new project, I was prompted to select an asset type and then specify which asset as the preview one, like in the past versions. I selected that character BP. From then on, regardless of what I attempt, that specific character remains on screen. Even when I specify no assets in the editor settings, or refresh from the top menu element. That asset that is shown I cannot select or move or rotate in any way as well.
The crash happens when I load the project with these abilities in the content folder of the project.