I get "Der Wert darf nicht Null sein. Parametername: key" when trying to add a single termbase

Good evening here in Europe,

See error stack attached. I get this when trying to add a single FR (France, I think? But they mustn't be locale-sensitive, normally) to ENUK termbase to our FRCH to ENUK project, i.e. doing it one at a time, extra carefully.

This termbase was created using a recent version of MultiTerm. I get this when trying  to add other termbases of the same locale, too.

<SDLErrorDetails time="08.12.2025 19:43:23">
  <ErrorMessage>Der Wert darf nicht NULL sein.
Parametername: key</ErrorMessage>
  <Exception>
    <Type>System.ArgumentNullException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <ExceptionMessage>Der Wert darf nicht NULL sein.
Parametername: key</ExceptionMessage>
    <ParamName>key</ParamName>
    <HelpLink />
    <Source>mscorlib</Source>
    <HResult>-2147467261</HResult>
    <StackTrace><![CDATA[   bei System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
   bei System.Collections.Generic.Dictionary`2.ContainsKey(TKey key)
   bei Sdl.TranslationStudio.ProjectManagement.Terminology.ProjectTermbasesGridDrawFilter.GetConnectState(String termbaseName)
   bei Sdl.TranslationStudio.ProjectManagement.Terminology.ProjectTermbasesGridDrawFilter.DrawElement(DrawPhase drawPhase, UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.FilterPhaseHelper(DrawPhase currentPhase, IUIElementDrawFilter drawFilter, DrawPhase phasesToFilter, UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   bei Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   bei Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   bei Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   bei Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   bei Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   bei Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   bei Infragistics.Win.UIElement.DrawHelper(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Boolean clipText, Boolean forceDrawAsFocused, Boolean preventAlphaBlendGraphics, Nullable`1 zoomFactor)
   bei Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Size elementSize, Boolean preventAlphaBlendGraphics)
   bei Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   bei Infragistics.Win.UltraWinGrid.UltraGridUIElement.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   bei Infragistics.Win.UltraControlBase.OnPaint(PaintEventArgs pe)
   bei Infragistics.Win.UltraWinGrid.UltraGrid.OnPaint(PaintEventArgs pe)
   bei System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
   bei System.Windows.Forms.Control.WmPaint(Message& m)
   bei System.Windows.Forms.Control.WndProc(Message& m)
   bei System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   bei System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   bei System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>Trados Studio</ProductName>
    <ProductVersion>Studio18</ProductVersion>
    <EntryAssemblyFileVersion>18.1.3.6657</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 11 Home</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1031</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>DESKTOP-SVB6ICH\sw</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>DESKTOP-SVB6ICH</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>33466748 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>

Cheers,

Sebastian Witte



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[edited by: Astrid Elke Witte at 6:47 PM (GMT 0) on 8 Dec 2025]
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  • It seems the RWS Support Agent cannot help much. He says he cannot replicate the issue, which is one I keep getting everytime with this project, and can only offer to reorganize individual termbases, which might take just too long for meeting the other job's deadline of Thursday EOB CET, which job is much more time-critical than this one, and does require use of termbases content-wise. Have ya'll got any ideas? Our own idea is to try setting up the new project with the same locale as the termbases, i.e. FR-France to EN-UK.

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  • It seems the RWS Support Agent cannot help much. He says he cannot replicate the issue, which is one I keep getting everytime with this project, and can only offer to reorganize individual termbases, which might take just too long for meeting the other job's deadline of Thursday EOB CET, which job is much more time-critical than this one, and does require use of termbases content-wise. Have ya'll got any ideas? Our own idea is to try setting up the new project with the same locale as the termbases, i.e. FR-France to EN-UK.

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