Trados Studio bug when opening project : Object reference not set to an instance of an object

When opening Studio 2017 SP1, sometimes the "Object reference not set to an instance of an object" alert is displayed.

XML report below.

Subsequently the "Select match 1" (2, 3) commands don't work (nothing happens).

Closing Studio and restarting (under identical conditions) often does not provoke the problem a second time.

Guess : Race condition/Google translate too slow in providing response or provided invalid response ?

Best,

Jon

<SDLErrorDetails time="12/09/2017 10:21:40">
  <ErrorMessage>Object reference not set to an instance of an object.</ErrorMessage>
  <Exception>
    <Type>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <HelpLink />
    <Source>Sdl.Core.PluginFramework</Source>
    <HResult>-2147467261</HResult>
    <StackTrace><![CDATA[   at Sdl.Core.PluginFramework.ObjectRegistry`2.CreateObjects()
   at Sdl.LanguagePlatform.TranslationMemoryApi.TranslationProviderManager.GetTranslationProviderWinFormsUIs()
   at Sdl.TranslationStudio.Common.TranslationProvider.TranslationProviderService.GetTranslationProviderFactoryUI(Uri providerUri)
   at Sdl.TranslationStudio.Common.TranslationProvider.TranslationProviderService.GetTranslationProviderFactoryUI(ITranslationProvider provider)
   at Sdl.TranslationStudio.Editor.TranslationMemory.CompoundTranslationMemorySearchResultsControl.UpdateMessageBar()
   at Sdl.TranslationStudio.Editor.TranslationMemory.CompoundTranslationMemorySearchResultsControl._searchResultsControl_CurrentTranslationUnitChanged(Object sender, EventArgs e)
   at Sdl.TranslationStudio.Common.TranslationMemory.AbstractTranslationMemoryControl`1.OnCurrentTranslationUnitChanged()
   at Sdl.TranslationStudio.Common.TranslationMemory.AbstractTranslationMemoryControl`1.HandleActiveRowChanged(ActiveRowChangedEventArgs e)
   at Sdl.TranslationStudio.Common.TranslationMemory.AbstractTranslationMemoryControl`1.Source_ActiveRowChanged(Object sender, ActiveRowChangedEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at AbstractFrameworkEditControl.raise_ActiveRowChanged(Object value0, ActiveRowChangedEventArgs value1)
   at AbstractFrameworkEditControl.OnActiveRowChanged(Object sender, ActiveRowChangedEventArgs args)
   at AbstractFrameworkEditControl.set_ActiveRow(IRowInfo activeRow)
   at Sdl.DesktopEditor.Control.Support.RowInfo.set_Active(Boolean value)
   at SideBySideEditor.set_ActiveRowNumber(Int32 rowNumber)
   at Sdl.TranslationStudio.Common.TranslationMemory.AbstractTranslationMemoryControl`1.set_CurrentTranslationUnitIndex(Int32 value)
   at Sdl.TranslationStudio.Common.TranslationMemory.AbstractTranslationMemoryControl`1.SideBySideEditor_AfterInitialUpdate(Object sender, AfterInitialUpdateEventArgs e)
   at SideBySideEditor.raise_AfterInitialUpdate(Object value0, AfterInitialUpdateEventArgs value1)
   at SideBySideEditor.OnAfterInitialUpdate(Object sender, AfterInitialUpdateEventArgs args)
   at SideBySideEditor.Target_AfterInitialUpdate(Object sender, AfterInitialUpdateEventArgs args)
   at AbstractFrameworkEditControl.raise_AfterInitialUpdate(Object value0, AfterInitialUpdateEventArgs value1)
   at AbstractFrameworkEditControl.OnAfterInitialUpdate(Object sender, AfterInitialUpdateEventArgs args)
   at FrameworkEditControlEventSource.AfterInitialUpdate(FrameworkEditControlEventSource* )
   at Tree.DocumentControl.vl_WindowProc(DocumentControl* , HWND__* , UInt32 , UInt32 , Int32 )
   at FrameworkDocumentControl.vl_WindowProc(FrameworkDocumentControl* , HWND__* h_wnd, UInt32 n_msg, UInt32 w_p, Int32 l_p)
   at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
   at System.Windows.Forms.Control.DefWndProc(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>14.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>14.1.6284.6</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Home</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>2057</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>lux\Jon</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>LUX</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>8325208 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>

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