ensure menu states correctly set when opening a project

src/gui_open_project.m

@@ -77,7 +77,10 @@ try
                     gui_tools.menu_options('estimation','On');
                     gui_tools.menu_options('stochastic','On');
                     gui_tools.menu_options('output','On');
+                    gui_tools.menu_options('deterministic', 'Off');
                 else
+                    gui_tools.menu_options('estimation', 'Off');
+                    gui_tools.menu_options('stochastic', 'Off');
                     gui_tools.menu_options('deterministic','On');
                 end
             end