The error occurs when the terminal type selection window (smart or regular terminal) appears.

SmarTTY.exe, 3.0.0.1,

Error in  module KERNELBASE.dll, version: 10.0.16299.15

.NET v4.0.30319

System.TypeLoadException
SmarTTY.GUI.Backend.MainWindowController+<>c__DisplayClass115_0.<FocusMainControlDelayed>b__0()
System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
System.Windows.Threading.DispatcherOperation.InvokeImpl()
System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object)
System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext, System.Threading.ContextCallback, System.Object)
System.Windows.Threading.DispatcherOperation.Invoke()
System.Windows.Threading.Dispatcher.ProcessQueue()
System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)
MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef)
System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)
System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame)
System.Windows.Window.ShowHelper(System.Object)
System.Windows.Window.Show()
System.Windows.Window.ShowDialog()
SmarTTY.GUI.MainWindow..ctor(t3, VisualTTY.SSHConnectionSettings, System.String, Boolean)
x.a(System.Object, System.EventArgs)
System.Windows.Window.OnClosed(System.EventArgs)
SmarTTY.GUI.ConnectionSelectionWindow.OnClosed(System.EventArgs)
System.Windows.Window.WmDestroy()
System.Windows.Window.WindowFilterMessage(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
System.Windows.Interop.HwndSource.PublicHooksFilterMessage(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)