Dockpanel behaivior

After upgrade (15.2.4) Start getting this error when opening detailview from Docked listview

Where should i look?

BR,

-mikko

System.NullReferenceException: Object reference not set to an instance of an object.
at Xafari.DockPanels.Win.XafariDockingWinWindowController.SynchronizeWithInfo()
at Xafari.DockPanels.Win.XafariDockingWinWindowController.xafariDockingWindowController_SettingsReloaded(Object sender, EventArgs e)
at DevExpress.ExpressApp.Win.Templates.XtraFormTemplateBase.OnSettingsReloaded()
at DevExpress.ExpressApp.Win.Templates.XtraFormTemplateBase.ReloadSettings()
at DevExpress.ExpressApp.Win.WinShowViewStrategyBase.SetAndApplySettings(WinWindow window)
at DevExpress.ExpressApp.Win.WinShowViewStrategyBase.CreateWindow(ShowViewParameters parameters, ShowViewSource showViewSource, Boolean isMain)
at DevExpress.ExpressApp.Win.WinShowViewStrategyBase.CreateInspectorWindow(ShowViewParameters parameters, ShowViewSource showViewSource)
at DevExpress.ExpressApp.Win.WinShowViewStrategyBase.ShowViewInInspector(ShowViewParameters parameters, ShowViewSource showViewSource)
at DevExpress.ExpressApp.Win.WinShowViewStrategyBase.ShowViewInNewWindow(ShowViewParameters parameters, ShowViewSource showViewSource)
at DevExpress.ExpressApp.Win.ShowInSingleWindowStrategy.ShowViewFromCommonView(ShowViewParameters parameters, ShowViewSource showViewSource)
at DevExpress.ExpressApp.ShowViewStrategyBase.ShowViewCore(ShowViewParameters parameters, ShowViewSource showViewSource)