Error message during verification (F8): 'Failed to verify document: Object reference not set to an instance of an object (Studio 2024, SR 1 - 18.1.4.6694, Win 11).

I received this error message while trying to verify a document with F8 (QA, Tag, Terminology). Verification works without terminology, but throws error when trying to verify terminology as well.



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[edited by: Frank Van T Veer at 9:15 AM (GMT 1) on 13 Jul 2026]
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  • Hello,

    To resolve the error message "Failed to verify document: Object reference not set to an instance of an object" in Trados Studio 2024 during verification with terminology enabled, follow these steps:

    ### Step 1: Isolate the Issue

    1. Open **File > Options > Verification** in Trados Studio.

    2. Uncheck all verification options, including **Terminology Verifier**.

    3. Run the verification (F8) without terminology to confirm that the issue is specific to the Terminology Verifier.

    ### Step 2: Reorganize the Termbase

    1. Open your termbase in **MultiTerm**.

    2. Use the **Reorganize** function in MultiTerm to ensure the termbase is optimized and free of inconsistencies:

      - In MultiTerm, go to **Termbase Management**.

      - Select your termbase and click **Reorganize**.

    3. Save and close the termbase.

    ### Step 3: Update Trados Studio and MultiTerm

    1. Ensure that both **Trados Studio 2024** and **MultiTerm 2024** are updated to the latest versions:

      - Check for updates directly within the applications.

    2.

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  • Followed the AI steps above, but no solution. Error remains.Both programs are up to date.

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  • Hi ,

    Can you please provide the full stracktrace of the error message, you can exclude the last lines where the user information appears. Please see below how to save that:

    gateway.rws.com/csm

    Best regards,

    Anca

    Anca Stoian RWS Group

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  • Can I attach it here, or do I have to send it to a specific email address?

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  • you can copy-paste it here, thank you! 

    Anca Stoian RWS Group

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  • <SDLErrorDetails time="14-7-2026 14:18:43">
    <ErrorMessage>Failed to verify document: De objectverwijzing is niet op een exemplaar van een object ingesteld.</ErrorMessage>
    <Exception>
    <Type>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <ExceptionMessage>De objectverwijzing is niet op een exemplaar van een object ingesteld.</ExceptionMessage>
    <HelpLink/>
    <Source>Sdl.Verification.TermVerifier</Source>
    <HResult>-2147467261</HResult>
    <StackTrace>
    <![CDATA[ bij Sdl.Verification.TermVerifier.TermVerifierProcessing.HasTargetEntry(TermRecognitionHit sourceHit, List`1 targetTermsNotMatched) bij Sdl.Verification.TermVerifier.TermVerifierProcessing.CheckTermUsage() bij Sdl.Verification.TermVerifier.TermVerifierProcessing.Verify(IMessagingHelper messagingHelper, ISegment source, ISegment target) bij Sdl.Verification.TermVerifier.TermVerifierMain.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Framework.Core.Utilities.BilingualApi.BilingualContentHandlerAdapter.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Framework.Integration.AbstractBilingualProcessorContainer.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Framework.BilingualApi.AbstractBilingualContentProcessor.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Framework.Integration.LocationMarkerLocator.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Framework.Integration.AbstractBilingualProcessorContainer.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Framework.Integration.FileExtractor.ProcessParagraphUnit(IParagraphUnit paragraphUnit) bij Sdl.FileTypeSupport.Bilingual.Tmfc.TmfcReaderImpl.vv_Visit(TmfcReaderImpl* , FrameworkParagraphContainerField* field) bij FrameworkParagraphContainerField.vv_AcceptFrameworkVisitor(FrameworkParagraphContainerField* , FrameworkFieldVisitor* visitor) bij Sdl.FileTypeSupport.Bilingual.Tmfc.TmfcReaderImpl.vv_VisitStartEndField(TmfcReaderImpl* , StartEndField* startEnd) bij Sdl.FileTypeSupport.Bilingual.Tmfc.TmfcReaderImpl.b_VisitNext(TmfcReaderImpl* ) bij Sdl.FileTypeSupport.Bilingual.Tmfc.TmfcReader.ParseNext() bij Sdl.FileTypeSupport.Framework.Integration.FileExtractor.ParseNext() bij Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.ParseNext() bij Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.Parse() bij Sdl.TranslationStudio.Editor.Verification.VerifyDocumentJobRequest.PerformBilingualVerification() bij Sdl.TranslationStudio.Editor.Verification.VerifyDocumentJobRequest.Execute(IJobExecutionContext context) bij Sdl.Desktop.Platform.Implementation.Services.JobExecuter.Execute(JobData jobData) bij Sdl.Desktop.Platform.Implementation.ResourceLoggingInternalCommandExecuter`1.ExecuteWithResourceLogging(TCommandData commandData, String message) bij Sdl.Desktop.Platform.Implementation.Services.Job._worker_DoWork(Object sender, DoWorkEventArgs e) bij System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e) bij System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument) ]]>
    </StackTrace>
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  • Please send it to me as private message here in community 

    Anca Stoian RWS Group

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