SourceTree 126.96.36.199 kept failing to start and launching the crash reporter dialog on Windows 10 (Pro Build 1607) where I have two screens arranged vertically (i.e. secondary display is arranged above the primary display)
This seems to be the related log message from sourcetree.log...
ERROR [2017-06-02 11:13:14,782]  [SourceTree.Analytics.Crash.BugSplat.CrashAnalyticsService] [DispatcherUnhandledExceptionHandler] - DispatcherUnhandledExceptionHandler for [SourceTree, 188.8.131.52] called with [System.Windows.Threading.Dispatcher, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs] System.ArgumentException: '8' is not a valid value for property 'Width'. at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal) at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value) at SourceTree.MainWindow.RestoreWindowState() at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent) at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root) at MS.Internal.LoadedOrUnloadedOperation.DoWork() at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks() at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Interop.HwndTarget.OnResize() at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam) at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
Thank you Mike - I have installed 184.108.40.206 from here: https://downloads.atlassian.com/software/sourcetree/windows/ga/SourceTreeSetup-220.127.116.11.exe
Disconnecting the secondary display allowed SourceTree to launch successfully and resolve the issue.
The other reason for logging this issue is because the ReleaseNotes for 18.104.22.168 refer to a possibly related change:
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Supported Platforms macOS Windows To make using Sourcetree as simple yet powerful as possible we embed (bundle) dependencies such as Git, Git LFS, and Mercurial. We strive to keep these...
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