(GSS)[6.4.z] While creating dynamic menu business central web console gets hang..

1) In dynamic menu , create new item Test. 2) Click on "New Screen ", add name Test1, please add code in template section and in the JavaScript(main ) section as well , save and close. 3) Click on "New Screen ", add name Test2, please add code in template section and in the JavaScript(main ) section as well, save and close. 4) From Plugins Explporer, click “New Dynamic Menu” and add activity ID the Test1 and menu label SampleTest, save and close. After completing all the above steps logout and login , now you see Test menu and can see the option like Test1 and Test2. Please click 2 -3 times on "Process Definition" under "Process Management Menu" and go back to new menu as Test then you will see blank screen on click on every menu item.