Hello, I am getting this error (in my target language, actually) when I try to generate the target translation from an Excel file. I have already tried all possible troubleshooting in the KB and answers to similar posts, but this keeps on happening even with new Excel files with very simple content. Please see as reference the error text below.

Thanks in advance for your suggestions,

Adela

SDLErrorDetails time="04/05/2018 6:53:10">
  <ErrorMessage>Referencia a objeto no establecida como instancia de un objeto.</ErrorMessage>
  <Exception>
    <Type>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <HelpLink />
    <Source>Sdl.FileTypeSupport.Filters.Excel</Source>
    <HResult>-2147467261</HResult>
    <StackTrace><![CDATA[   en Sdl.FileTypeSupport.Filters.Excel.FilterControllerFramework.OfficeController.UpdateDocumentFile(XsltArgumentList argsList, XslCompiledTransform xslTransform, XPathNavigator child)
   en Sdl.FileTypeSupport.Filters.Excel.FilterControllerFramework.OfficeController.IterateXsltFiles(XsltArgumentList argsList, FileMap rule, XPathNodeIterator iter, Boolean isUpdate, String targetFilePath)
   en Sdl.FileTypeSupport.Filters.Excel.FilterControllerFramework.OfficeController.IterateContentType(String xslFileNamesPath, Boolean isUpdate, String filePath, String filterStr, String targetFilePath, Boolean isCalledByRelsTableIteration)
   en Sdl.FileTypeSupport.Filters.Excel.FilterControllerFramework.OfficeController.serviceBackward()
   en Sdl.FileTypeSupport.Filters.Excel.PlugInFilter.FileParser.DocumentParser.Update()
   en Sdl.FileTypeSupport.Filters.Excel.PlugInFilter.FileParser.DocumentExtractImpl.Update(DocumentCollection srcCollection, String filename, String tgtFilePath)
   en Sdl.FileTypeSupport.Filters.Excel.PlugInFilter.FileWriterAndPreviewFileWriter.WriterImpl.EndOfInput()
   en Sdl.FileTypeSupport.Filters.Excel.PlugInFilter.FileWriterAndPreviewFileWriter.ExcelWriter.EndOfInput()
   en Sdl.FileTypeSupport.Framework.Integration.NativeWriterMessagesProxy.EndOfInput()
   en Sdl.FileTypeSupport.Framework.Integration.FileGenerator.CallEndOfInput()
   en Sdl.FileTypeSupport.Framework.Integration.FileGenerator.FileComplete()
   en Sdl.FileTypeSupport.Framework.BilingualApi.AbstractBilingualContentProcessor.FileComplete()
   en Sdl.FileTypeSupport.Framework.Integration.AbstractBilingualProcessorContainer.FileComplete()
   en Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.FileComplete()
   en Sdl.FileTypeSupport.Framework.BilingualApi.AbstractBilingualContentProcessor.FileComplete()
   en Sdl.FileTypeSupport.Framework.Integration.AbstractBilingualProcessorContainer.FileComplete()
   en Sdl.FileTypeSupport.Bilingual.SdlXliff.XliffFileReader.OnEndFile()
   en Sdl.FileTypeSupport.Bilingual.SdlXliff.SdlXliffFeeder.<ContinueScanning>b__2(ISdlXliffStreamContentHandler handler)
   en System.Collections.Generic.List`1.ForEach(Action`1 action)
   en Sdl.FileTypeSupport.Bilingual.SdlXliff.SdlXliffFeeder.ContinueScanning()
   en Sdl.FileTypeSupport.Bilingual.SdlXliff.XliffFileReader.ContinueParsing()
   en Sdl.FileTypeSupport.Bilingual.SdlXliff.XliffFileReader.ParseNext()
   en Sdl.FileTypeSupport.Framework.Integration.FileExtractor.ParseNext()
   en Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.ParseNext()
   en Sdl.FileTypeSupport.Framework.Integration.MultiFileConverter.Parse()
   en Sdl.ProjectApi.AutomaticTasks.NativeFileGenerator.GenerateFiles(ContentRestriction restriction, Boolean preview, Int32 filePercentBase, Int32 filePercentFactor)
   en Sdl.ProjectApi.AutomaticTasks.GenerateTargetTranslation.GenerateTargetTranslationTask.ProcessFile(IExecutingTaskFile executingTaskFile)
   en Sdl.ProjectApi.AutomaticTasks.AbstractFileLevelAutomaticTaskImplementation.Execute()]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>12.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>12.2.5195.7</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Home</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1033</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>DESKTOP-B3TDBH9\Maria Adela</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>DESKTOP-B3TDBH9</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>12483180 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>