app designer button callback stopped working suddenly

Hi All,

I was working on a new app on app designer and it worked fine until suddenly the push buttons callbeck stopped working and errors appeared on the command window. I tried to open a new app and the errors repeat even on a new app with only one state button.

These are the errors I get on the command window every time I push the button:

Warning: Error occurred while executing the
listener callback for event GuiEvent defined
for class
appdesservices.internal.peermodel.ServerDrivenPeerNodeProxyView:
Undefined function or variable 'sd'.

Error in
matlab.ui.control.internal.controller.ComponentController/executeUserCallback
(line 340)
                sd

Error in
matlab.ui.control.internal.controller.ComponentController/handleUserInteraction
(line 285)
                obj.executeUserCallback(callbackInfo{:});

Error in
matlab.ui.control.internal.controller.BinaryComponentController/handleEvent
(line 55)
				obj.handleUserInteraction('ValueChanged',
                {'ValueChanged', eventData,
                'PrivateValue', newValue});

Error in
matlab.ui.control.internal.controller.StateButtonController/handleEvent
(line 63)
                [e-mail]r(obj,
                src, event);

Error in
appdesservices.internal.interfaces.controller.AbstractController/handleProxyViewEvent
(line 279)
                handleEvent(obj, src,
                event);

Error in
appdesservices.internal.interfaces.controller.AbstractController>@(src,event)handleProxyViewEvent(obj,src,event)

Error in
appdesservices.internal.interfaces.view.AbstractProxyView/notify
(line 117)
            obj.notify@handle(varargin{:});

Error in
appdesservices.internal.peermodel.PeerNodeProxyView/handlePeerEventFromClient
(line 214)
            notify(obj, 'GuiEvent',
            eventData);

Error in
appdesservices.internal.peermodel.PeerNodeProxyView>@(varargin)obj.handlePeerEventFromClient(varargin{:})
(line 78)
            obj.PeerEventListener =
            addlistener(obj.PeerNode,
            'peerEvent',
            @obj.handlePeerEventFromClient);

Error in hgfeval (line 62)
        feval(fcn{1},varargin{:},fcn{2:end});

Error in javaaddlistener>cbBridge (line 52)
    hgfeval(response, java(o), e.JavaEvent)

Error in
javaaddlistener>@(o,e)cbBridge(o,e,response)
(line 47)
                          @(o,e)
                          cbBridge(o,e,response)); 

The code is the app designer templet for new app with one callback defined for the state button:

classdef IE_Data_Plotter < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure  matlab.ui.Figure
        Button    matlab.ui.control.StateButton
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Value changed function: Button
        function ButtonValueChanged(app, event)
            value = app.Button.Value;
        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 767 577];
            app.UIFigure.Name = 'UI Figure';

            % Create Button
            app.Button = uibutton(app.UIFigure, 'state');
            app.Button.ValueChangedFcn = createCallbackFcn(app, @ButtonValueChanged, true);
            app.Button.Text = 'Button';
            app.Button.Position = [167 321 100 22];

            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = IE_Data_Plotter

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end