error message when trying to open the Upgrade Translation Memories tool

Hi. After a recent update I now cannot use the Upgrade Translation Memories tool anymore.

I get the following error message:

Could not load type 'Sdl.Desktop.Platform.Implementation.Wizard.ProgressHeader' from assembly 'Sdl.Desktop.Platform, Version=16.0.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888'

Any ideas as to how to fix this?

Many thanks in advance.

<SDLErrorDetails time="21/10/2021 13:48:04">
  <ErrorMessage>Could not load type 'Sdl.Desktop.Platform.Implementation.Wizard.ProgressHeader' from assembly 'Sdl.Desktop.Platform, Version=16.0.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888'.</ErrorMessage>
  <Exception>
    <Type>System.TypeLoadException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <TypeName>Sdl.Desktop.Platform.Implementation.Wizard.ProgressHeader</TypeName>
    <HelpLink />
    <Source>Sdl.TranslationStudio.TranslationMemoryMigration.UI</Source>
    <HResult>-2146233054</HResult>
    <StackTrace><![CDATA[   at Sdl.TranslationStudio.TranslationMemoryMigration.UI.TranslationMemoryMigrationWizardFactory.CreateWizard(ITranslationMemoryMigrationWizardData data)
   at Sdl.TranslationStudio.TranslationMemoryMigration.UI.Actions.TranslationMemoryMigrationAction.ShowTranslationMemoryMigrationWizard()
   at Sdl.TranslationStudio.TranslationMemoryMigration.UI.Actions.TranslationMemoryMigrationAction.Execute()
   at Sdl.Desktop.IntegrationApi.AbstractAction.Sdl.Desktop.IntegrationApi.Extensions.Internal.IAction.Execute()
   at Sdl.Desktop.IntegrationApi.Internal.Adaptors.InternalActionAdaptor.Execute()
   at Sdl.Desktop.Platform.Implementation.CommandBars.ActionService.<>c__DisplayClass30_0.<ExecuteAction>b__0()
   at Sdl.Desktop.Logger.Log.Resources(Object message, Action action)
   at Sdl.Desktop.Platform.Implementation.CommandBars.ActionService.ExecuteAction(IAction action, ActionOrigin origin, Boolean allowToggle)
   at Sdl.Desktop.Platform.WinForms.IgCommandBarAction.Execute()
   at Sdl.Desktop.Platform.WinForms.IgCommandBarAction._lazyButtonTool_ToolClick(Object sender, ToolClickEventArgs e)
   at Infragistics.Win.UltraWinToolbars.ToolBase.OnToolClick(ToolClickEventArgs e)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.OnToolClick(ToolClickEventArgs e)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.FireEvent(ToolbarEventIds id, EventArgs e)
   at Infragistics.Win.UltraWinToolbars.ToolBase.OnToolClick()
   at Infragistics.Win.UltraWinToolbars.ButtonToolUIElement.DoClickProcessing(MouseEventArgs e)
   at Infragistics.Win.UltraWinToolbars.ButtonToolUIElement.OnMouseUp(MouseEventArgs e)
   at Infragistics.Win.ControlUIElementBase.ProcessMouseUpHelper(Object sender, MouseEventArgs e)
   at Infragistics.Win.ControlUIElementBase.ProcessMouseUp(Object sender, MouseEventArgs e)
   at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsDockArea.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   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>Studio16</ProductVersion>
    <EntryAssemblyFileVersion>16.1.8.4404</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Pro</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1033</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>CLOTHILDECO5283\cleo</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>CLOTHILDECO5283</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>20628816 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>

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