Refactory code of MBScene.updateUI() from MBScene.show() - It is too busy to reborn full GUI components of pyink everytime the content being updated. - It is fixed by moveing code about updating of frameline to MBScene._updateUI() and avoid calling MBScene.show() to reduce time for updating frameline.

package org.madbutterfly;

import java.lang.Exception;

public class InvalidStateException extends Exception {
    public InvalidStateException() {
	super();
    }
    public InvalidStateException(String msg) {
	super(msg);
    }
}