Try block in MainGUI_EnableDisableGUI prevents crash on some startup conditions

function MainGUI_EnableDisableGUI(val)

    global maingui;

    try

    set(maingui.handles.listboxGroupTree, 'enable', val);

    set(maingui.handles.radiobuttonProcTypeGroup, 'enable', val);

    set(maingui.handles.radiobuttonProcTypeSubj, 'enable', val);

    set(maingui.handles.menuItemExport, 'enable', val);

    set(maingui.handles.menuItemReset, 'enable', val);

    set(maingui.handles.menuItemResetGroupFolder, 'enable', val)

    catch

       ; 

    end

end

 No newline at end of file