Cannot open scene editor

error in scene editor

java.lang.nosuchmethoderror: com.jme3.gde.core.scene.sceneapplication.requestscene(Lcom/jme3/gde/core/scene/scenerequest:) cannot i can’t open the scene editor…

does any one knows how tofix this? im new on jme3.

will somebody help this poor soul? I think you need to reinstall jMP and make sure to delete the cache