Using build 8658.
I have a scene with parallaxing layers, and after I had to delete an entire layer (due to the actors on this parallaxing layer erroneously moving out of sight, even when fully zoomed out in the scene editor), Stencyl now gives me an error message any time I add an actor to any layer. It also gives this error any time I add a new layer or move a layer up or down the hierarchy. Logs attached.
(It still allows me to add actors and layers, but I have to close the error message each and every time)