title: Toggle between form and unit is not working in Firemonkey project
body: <p>I'm testing Delphi XE2 and I create a new FireMonkey HD  Application, but  I have an  issue  the form designer for the FireMonkey forms is not visible or Available, the option Toggle Form/unit in the View menu is disabled as well the toolbar button to switch between forms and code, even using F12 does not work. I tried the Shitf-F12 option (Forms windows) but none form is listed. I tried adding new firemonkey  forms too, but none form is shown, only the code is visible. -Any suggestion to solve this issue?</p>