Shawn,

>I have a mmMainAppForm, and i have subclassed it.
>I have tested that it works as expected, with out any added controls.
>
>As soon as i Add a DexExpress xTreeView to the MainForm it stops the localization of the menu. It is repeatable as well.

Are you using an mmMainMenu on your form (rather than the .NET MainMenu)? I recommend setting a breakpoint in mmMainMenu.LocalizeMenu() to see what's going on.

Regards,