Sourcetree crashes at startup

After uppgrading to version 1.8.2 system crashes at startup.
log file says.
ERROR [2016-02-23 09:36:00,290] [1] [SourceTree.AppRoot] [HandleCrash] - Fatal error
System.Collections.Generic.KeyNotFoundException: Den angivna nyckeln finns inte i uppslagslistan.
vid MS.Internal.FontCache.FontFaceLayoutInfo.IntMap.System.Collections.Generic.IDictionary<System.Int32,System.UInt16>.get_Item(Int32 i)
vid Atlassian.Wpf.Control.PathTrimmingTextBlock.PathTrimmingTextBlock.TrimText(String text, Typeface typeFace, Double fontSize, Double parentalWidth)
vid Atlassian.Wpf.Control.PathTrimmingTextBlock.PathTrimmingTextBlock.ApplyTrimmedText(TextBlock textBlock, String text)
vid Atlassian.Wpf.Control.PathTrimmingTextBlock.PathTrimmingTextBlock.TextPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
vid Atlassian.Wpf.Control.PathTrimmingTextBlock.PathTrimmingTextBlock.OnLoaded(Object sender, RoutedEventArgs routedEventArgs)
vid System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
vid System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
vid System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
vid System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
vid System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
vid System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
vid System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
vid System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
vid MS.Internal.LoadedOrUnloadedOperation.DoWork()
vid System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
vid System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
vid System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
vid System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
vid System.Windows.Media.MediaContext.Resize(ICompositionTarget resizedCompositionTarget)
vid System.Windows.Interop.HwndTarget.OnResize()
vid System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
vid System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
vid MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
vid MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
vid System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
vid MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)