RiftCat Critical Error

2019/05/22 17:11:27.222 Session started
17:11:27.203 [Debug - RiftCat]: New session starting M/S - C9443BE8EA9BC24C80402F3178DA2C8746963011558B2A48C017A52C976CA802 / fb9afab4-fad9-4a6d-adc5-60e6899a79cb
17:11:27.355 [Info - RiftCat]: Started: Launcher version 2.3.12.0 at 5/22/2019 5:11:27 PM (UTC: 5/23/2019 12:11:27 AM)
17:11:28.520 [Error - RiftCat]: Unexpected (Fatal):
System.ArgumentNullException: Value cannot be null.
Parameter name: source
   at System.Linq.Enumerable.Select[TSource,TResult](IEnumerable`1 source, Func`2 selector)
   at VRE.Vridge.SharedUtils.Settings.Helpers.SteamvrHelper.GetVrSettingsFileName()
   at VRE.Vridge.SharedUtils.Settings.Helpers.SteamvrHelper.SetRenderingProperties(SteamvrSettings settings)
   at VRE.Vridge.SharedUtils.Settings.VridgeSettings.Save(VridgeSettingsLock externallyOwnedMutex)
   at VRE.Vridge.SharedUtils.Settings.VridgeSettings.UseDefaultSettings(Boolean ignoreDroppedMutex)
   at VRE.Vridge.SharedUtils.Settings.VridgeSettings.Load(VridgeSettingsLock externallyOwnedMutex)
   at VRE.Vridge.SharedUtils.Settings.VridgeSettings.InitAndLoad(AppType appType)
   at VRE.Vridge.SharedUtils.StartupCommon.Init(AppType appType, Boolean logVerbose)
   at VRE.Vridge.Launcher.App.OnStartup(StartupEventArgs e)
   at System.Windows.Application.<.ctor>b__1_0(Object unused)
   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)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
   at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(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)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at VRE.Vridge.Launcher.App.Main()
2019/05/22 17:11:34.196 Session ended