Unreal Engine plugin problem

Hey, just recently I created a new project in unreal. I added the plugin and everything worked fine. After couple of weeks I opened the project and the plugin basically stopped working. The frustum of the HoloPlayCapture actor disappeared and once I render the scene, I get black screen. Sometimes it even crashes.

Scene looks like this. I really have no clue, what could have happened.

Any help would be really appreciated ^^