Multilingual Excel File Type - Cannot generate multilingual file

Hi, I have a problem. After translated the files, I am not able to generate the multilingual Excel file. I get an "object reference " error for every language and every file:

 

And this is the error:

<SDLErrorDetails time="04.08.2022 13:59:04">
  <ErrorMessage>Unexpected exception when configuring file multiFileConverter for task 'Generate Multilingual Translations (Excel)': Object reference not set to an instance of an object..</ErrorMessage>
  <Exception>
    <Type>Sdl.ProjectApi.ProjectApiException, Sdl.ProjectApi, Version=17.0.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888</Type>
    <HelpLink />
    <Source>Sdl.ProjectApi.Implementation</Source>
    <HResult>-2146233088</HResult>
    <StackTrace><![CDATA[   at Sdl.ProjectApi.Implementation.TaskExecution.ContentProcessingTaskImplementation.TaskFileExecuter.ConfigureConverter(IMultiFileConverter multiFileConverter, Language targetLanguage)
   at Sdl.ProjectApi.Implementation.TaskExecution.ContentProcessingTaskImplementation.TaskFileExecuter.CreateMultiFileConverter(IProjectFile tf, String filePath)
   at Sdl.ProjectApi.Implementation.TaskExecution.ContentProcessingTaskImplementation.TaskFileExecuter.Parse(String targetFilePath)]]></StackTrace>
    <InnerException>
      <Type>System.Exception, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
      <HelpLink />
      <Source>Multilingual.Excel.FileType</Source>
      <HResult>-2146233088</HResult>
      <StackTrace><![CDATA[   at Multilingual.Excel.FileType.BatchTasks.ExportBatchTask.ConfigureConverter(ProjectFile projectFile, IMultiFileConverter multiFileConverter)
   at Sdl.ProjectApi.Implementation.TaskExecution.ContentProcessingTaskImplementationAdapter.ConfigureConverter(IExecutingTaskFile executingTaskFile, IMultiFileConverter multiFileConverter)
   at Sdl.ProjectApi.Implementation.TaskExecution.ContentProcessingTaskImplementation.TaskFileExecuter.ConfigureConverter(IMultiFileConverter multiFileConverter, Language targetLanguage)]]></StackTrace>
      <InnerException>
        <Type>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
        <HelpLink />
        <Source>Sdl.FileTypeSupport.Native.RegEx_1_1</Source>
        <HResult>-2147467261</HResult>
        <StackTrace><![CDATA[   at Sdl.FileTypeSupport.Native.RegEx.RegExWriter.IsUnicode(Codepage codepage)
   at Sdl.FileTypeSupport.Native.RegEx.RegExWriter.StartOfInput()
   at Sdl.FileTypeSupport.Framework.Integration.NativeWriterMessagesProxy.StartOfInput()
   at Sdl.FileTypeSupport.Framework.Integration.SubContentGenerator.CallStartOfInput()
   at Sdl.FileTypeSupport.Framework.Integration.SubContentGenerator.SetFileProperties(IFileProperties fileInfo)
   at Sdl.FileTypeSupport.Framework.Integration.FileGenerator.SetFileProperties(IFileProperties fileInfo)
   at Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.SetFileProperties(IFileProperties fileInfo)
   at Sdl.FileTypeSupport.Framework.BilingualApi.AbstractBilingualContentProcessor.SetFileProperties(IFileProperties fileInfo)
   at Sdl.FileTypeSupport.Framework.Integration.AbstractBilingualProcessorContainer.SetFileProperties(IFileProperties fileInfo)
   at Sdl.FileTypeSupport.Bilingual.SdlXliff.XliffFileReader.OnEndFileHeader()
   at Sdl.FileTypeSupport.Bilingual.SdlXliff.SdlXliffFeeder.<>c.<HandleFileHeader>b__16_1(ISdlXliffStreamContentHandler handler)
   at System.Collections.Generic.List`1.ForEach(Action`1 action)
   at Sdl.FileTypeSupport.Bilingual.SdlXliff.SdlXliffFeeder.HandleFileHeader()
   at Sdl.FileTypeSupport.Bilingual.SdlXliff.SdlXliffFeeder.ContinueScanning()
   at Sdl.FileTypeSupport.Bilingual.SdlXliff.XliffFileReader.ContinueParsing()
   at Sdl.FileTypeSupport.Bilingual.SdlXliff.XliffFileReader.ParseNext()
   at Sdl.FileTypeSupport.Framework.Integration.FileExtractor.ParseNext()
   at Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.ParseNext()
   at Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.Parse()
   at Sdl.ProjectApi.AutomaticTasks.NativeFileGenerator.GenerateFiles(ContentRestriction restriction, Boolean preview, Int32 filePercentBase, Int32 filePercentFactor)
   at Sdl.ProjectApi.AutomaticTasks.GenerateTargetTranslation.GenerateTargetTranslationTask.ProcessFile(IExecutingTaskFile executingTaskFile)
   at Sdl.ProjectApi.AutomaticTasks.AbstractFileLevelAutomaticTaskImplementation.Execute()]]></StackTrace>
      </InnerException>
    </InnerException>
  </Exception>
  <Environment>
    <ProductName>Trados Studio</ProductName>
    <ProductVersion>Studio17</ProductVersion>
    <EntryAssemblyFileVersion>17.0.1.11652</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 11 Pro</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1040</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>ACLOFFICE2020\Angelo</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>ACLOFFICE2020</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>33257056 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>

Can somebody help please?

Thank you

Angelo

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