Coming back to this, because-
Now, I can place torches (which have light source behaviour) and remove them.
Randomly, when doing so, I get this:
ArgumentError: Error #2015: Invalid BitmapData.
at flash.display::BitmapData/ctor()
at flash.display::BitmapData()
at com.stencyl.behavior::Script$/resizeImage()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib\stencyl\1,00\com\stencyl\behavior\Script.hx:2631]
at MethodInfo-9527()[E:\Stencyl Steffimiwhetsets\stencylworks\games-generated\Forest\Source\scripts\Design_81_81_TintScreen.hx:407]
at com.stencyl::Engine/draw()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib\stencyl\1,00\com\stencyl\Engine.hx:3290]
at com.stencyl::Engine/postUpdate()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib\stencyl\1,00\com\stencyl\Engine.hx:2845]
at com.stencyl::Engine/onUpdate()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib\stencyl\1,00\com\stencyl\Engine.hx:2791]
Seems to be something with resizing the masks. Could it be something on my end or is it a problem with the behaviour?