なぜかネットワークのスレッドで、NGUIのUILabelに対して
this.hogeLabel.alpha = 0.0f;
とやると
CompareBaseObjectsInternal can only be called from the main thread. Constructors and field initializers will be executed from the loading thread when loading a scene. Don't use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.
のエラーが出る。