Technically yes. Go to Apps, and click on the cog wheel to the left of Groups and Scenes. Scroll down to registeredScenes and look in the value field for a scene with null=. This is the problem child. If you go back to the previous screen and remove that scene, the problem goes away. Problem is that if you try and recreate that scene, it may or may not get recreated with the null= again. It keeps happening to me and i think the only realy way to fix this (currently) is to delete all the scenes and delete the app. Then you will have to create the app again and rebuild all your scenes. I have way too many scenes to do this work, so I am stuck waiting for this 2.1.7 release that will hopefully fix it and not introduce more bugs.