>> createDblChmfEllipsoidInBlk To complete construction, delete S1 from FEATool GUI... Handle must be a uicontextmenu. Error in matlab.uitools.internal.uimode/modeWindowButtonUpFcn (line 64) obj.UIContextMenu = hThis.UIContextMenu; Error in matlab.uitools.internal.uimode/setCallbackFcn>localModeWindowButtonUpFcn (line 56) hThis.modeWindowButtonUpFcn(hFig,evd,hThis,newButtonUpFcn); Error while evaluating Figure WindowButtonUpFcn.