I'm being hard on you.
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com::StatePlay/endlevel()[C:\Users\Ca se\Documents\Chromatic\src\com\StateP lay.as:573]
at com::EndDoor/onFlash()[C:\Users\Case\
Documents\Chromatic\src\com\EndDoor.a s:43]
at org.flixel.data::FlxFlash/update()[C:
\Users\Case\Documents\Chromatic\src\o rg\flixel\data\FlxFlash.as:67]
at org.flixel::FlxGame/update()[C:\Users \Case\Documents\Chromatic\src\org\fli xel\FlxGame.as:337]
I'm being hard on you... but 10.1 isn't that far off. Have a chat with your dev's, 'cause the above errors are produced by 10.1 debug.