Invalid child index RangeError: Invalid child index
at starling.display::DisplayObjectContainer/getChildAt()
at lildrummachine.ui.screens.sequencer.channel::ChannelMixerGroup/commitIsSelected()
at lildrummachine.ui.screens.sequencer.channel::ChannelMixerGroup/draw()
at feathers.core::FeathersControl/validate()
at feathers.controls::LayoutGroup/validateChildren()
at feathers.controls::LayoutGroup/draw()
at feathers.core::FeathersControl/validate()
at feathers.controls::Scroller/refreshViewPortBoundsForMeasurement()
at feathers.controls::Scroller/refreshViewPort()
at feathers.controls::Scroller/draw()
at feathers.controls::ScrollContainer/draw()
at feathers.core::FeathersControl/validate()
at feathers.layout::VerticalLayout/validateItems()
at feathers.layout::VerticalLayout/layout()
at feathers.controls::LayoutGroup/draw()
at feathers.core::FeathersControl/validate()
at feathers.core::ValidationQueue/advanceTime()
at feathers.controls.supportClasses::BaseScreenNavigator/showScreenInternal()
at feathers.controls::ScreenNavigator/showScreen()
at com.teotigraphix.ui.app.core::ScreenLauncherImpl/setScreen()
at com.teotigraphix.app.controller.handlers::NavigationDrawerHandlers/onNavigationItemChanged()
at org.osflash.signals::Signal/dispatch()
at com.teotigraphix.ui.app.core::AbstractUIState/set selectedNavigationItem()
at com.teotigraphix.ui.app.core::AbstractUIState/setSelectedNavigationItem()
at lildrummachine.controller::ApplicationController/context_launchInitialScreenHandler()
at org.robotlegs.starling.base::EventMap/routeEventToListener()
at MethodInfo-3318()
at starling.events::EventDispatcher/invokeEvent()
at starling.events::EventDispatcher/dispatchEvent()
at starling.events::EventDispatcher/dispatchEventWith()
at org.robotlegs.starling.mvcs::Actor/dispatchWith()
at com.teotigraphix.ui.app.core::ScreenLauncherImpl/goToInitial()
at lildrummachine.controller.handlers::ProjectHandlers/internalLoadInitialScreen()
at starling.animation::DelayedCall/advanceTime()
at starling.animation::Juggler/advanceTime()
at starling.core::Starling/advanceTime()
at starling.core::Starling/nextFrame()
at starling.core::Starling/onEnterFrame()
Invalid child index RangeError: Invalid child index at starling.display::DisplayObjectContainer/getChildAt() at lildrummachine.ui.screens.sequencer.channel::ChannelMixerGroup/commitIsSelected() at lildrummachine.ui.screens.sequencer.channel::ChannelMixerGroup/draw() at feathers.core::FeathersControl/validate() at feathers.controls::LayoutGroup/validateChildren() at feathers.controls::LayoutGroup/draw() at feathers.core::FeathersControl/validate() at feathers.controls::Scroller/refreshViewPortBoundsForMeasurement() at feathers.controls::Scroller/refreshViewPort() at feathers.controls::Scroller/draw() at feathers.controls::ScrollContainer/draw() at feathers.core::FeathersControl/validate() at feathers.layout::VerticalLayout/validateItems() at feathers.layout::VerticalLayout/layout() at feathers.controls::LayoutGroup/draw() at feathers.core::FeathersControl/validate() at feathers.core::ValidationQueue/advanceTime() at feathers.controls.supportClasses::BaseScreenNavigator/showScreenInternal() at feathers.controls::ScreenNavigator/showScreen() at com.teotigraphix.ui.app.core::ScreenLauncherImpl/setScreen() at com.teotigraphix.app.controller.handlers::NavigationDrawerHandlers/onNavigationItemChanged() at org.osflash.signals::Signal/dispatch() at com.teotigraphix.ui.app.core::AbstractUIState/set selectedNavigationItem() at com.teotigraphix.ui.app.core::AbstractUIState/setSelectedNavigationItem() at lildrummachine.controller::ApplicationController/context_launchInitialScreenHandler() at org.robotlegs.starling.base::EventMap/routeEventToListener() at MethodInfo-3318() at starling.events::EventDispatcher/invokeEvent() at starling.events::EventDispatcher/dispatchEvent() at starling.events::EventDispatcher/dispatchEventWith() at org.robotlegs.starling.mvcs::Actor/dispatchWith() at com.teotigraphix.ui.app.core::ScreenLauncherImpl/goToInitial() at lildrummachine.controller.handlers::ProjectHandlers/internalLoadInitialScreen() at starling.animation::DelayedCall/advanceTime() at starling.animation::Juggler/advanceTime() at starling.core::Starling/advanceTime() at starling.core::Starling/nextFrame() at starling.core::Starling/onEnterFrame()