Not much info to work with. - How many scenes do you have? - Is this scene last scene or somewhere in middle? - Have you tried aligning the scenes
Scenes are randomly selected. So for example if you have 4 scenes (levels) BB randomly selects the one that will be displayed and you have 1/4 chance that Scene #4 will be displayed. You can mute a scene by Clicking on it and press M -- M again to unmute... So if you want to test Scene #4, mute 1-3 scenes... Also you can set at what distance the scene will be active/deactivated.
quick test, click on the scene with issue and press S on your keyboard so it turns green, then play game and see if scene appears