I have update work fine, but under admin Board setting.
I received the error:
Forum Error

There has been a serious error loading the forum. No further information is available.

Please contact the administrator if this message persists.


Try Again

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In the log i have this:
System.NullReferenceException: Riferimento a un oggetto non impostato su un'istanza di oggetto.
in YAF.Pages.Admin.boardsettings.Page_Load(Object sender, EventArgs e)
in System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
in System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
in System.EventHandler.Invoke(Object sender, EventArgs e)
in System.Web.UI.Control.OnLoad(EventArgs e)
in System.Web.UI.Control.LoadRecursive()
in System.Web.UI.Control.LoadRecursive()
in System.Web.UI.Control.LoadRecursive()
in System.Web.UI.Control.LoadRecursive()
in System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

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Thanks for the bug report.

Fixed and committed.