有个项目，原本是V13 SP1的，315-2DP的PLC，profibus通讯，挂了16个施耐德的伺服，

现在用V14打开， 提示升级，GSD文件安装通过，然后执行导出项目和库，然后进行到6% 就提示失败，

然后创建了1个 *.xml 文件

如下：

<?xml version="1.0" encoding="utf-8"?>

<?xml-stylesheet type='text/xsl' href='ConversionLogFile.xsl'?>

<LogFile projectName="PLC_T1" typeText="Type" messageText="Message" timeText="Time">

  <MessageCell ServiceId="80" MessageId="30" MessageClass="Information" Timestamp="2/17/2017 9:59:44 AM">

    <Number ServiceNumber="80" MessageNumber="30" />

    <Text FeedbackText="Upgrade started" />

    <Help HelpId="-1" />

  </MessageCell>

  <MessageCell ServiceId="80" MessageId="30" MessageClass="Information" Timestamp="2/17/2017 9:59:45 AM">

    <Number ServiceNumber="80" MessageNumber="30" />

    <Text FeedbackText="Reading information from previous project/library." />

    <Help HelpId="-1" />

  </MessageCell>

  <MessageCell ServiceId="80" MessageId="30" MessageClass="Information" Timestamp="2/17/2017 9:59:46 AM">

    <Number ServiceNumber="80" MessageNumber="30" />

    <Text FeedbackText="Creating new project/library." />

    <Help HelpId="-1" />

  </MessageCell>

  <MessageCell ServiceId="80" MessageId="30" MessageClass="Information" Timestamp="2/17/2017 9:59:49 AM">

    <Number ServiceNumber="80" MessageNumber="30" />

    <Text FeedbackText="Exporting project/library data." />

    <Help HelpId="-1" />

  </MessageCell>

  <Details ServiceId="80" MessageId="30" Timestamp="2/17/2017 10:00:11 AM" Debug="false">

    <Text />

  </Details>

  <MessageCell ServiceId="80" MessageId="30" MessageClass="Information" Timestamp="2/17/2017 10:00:11 AM">

    <Number ServiceNumber="80" MessageNumber="30" />

    <Text FeedbackText="Importing data into the new project/library." />

    <Help HelpId="-1" />

  </MessageCell>

  <Details ServiceId="80" MessageId="30" Timestamp="2/17/2017 10:00:42 AM" Debug="false">

    <Text />

  </Details>

  <MessageCell ServiceId="80" MessageId="30" MessageClass="Error" Timestamp="2/17/2017 10:00:42 AM">

    <Number ServiceNumber="80" MessageNumber="30" />

    <Text FeedbackText="Upgrade failed." />

    <Help HelpId="-1" />

  </MessageCell>

  <Details ServiceId="80" MessageId="30" Timestamp="2/17/2017 10:00:42 AM" Debug="false">

    <Text>Project import failed! Object reference not set to an instance of an object.

   at Siemens.Automation.ObjectFrame.FileStorage.Conversion.CoreTextAttributeMetaDataHelper.RemoveLinkFromObjectAtributeData(IStorageObject linkedObject, StoreObjectId id)

   at Siemens.Automation.ObjectFrame.FileStorage.Conversion.CoreTextAttributeMetaDataHelper.ClearAllLinksOfObjectOfCoreText(IStorageObject coreText, ILookupCache lookupCache)

   at Siemens.Automation.ObjectFrame.FileStorage.Conversion.CoreTextAttributeConversionOperator.UpdateICoreAttributesCommentWithCoreTextAttribute()

   at Siemens.Automation.ObjectFrame.FileStorage.Conversion.CoreTextAttributeConversionOperator.PostImport(Action`1 updateObjectRef)

   at Siemens.Automation.ObjectFrame.FileStorage.V11Import.V11_Import.PostImport(WriteBuffer writeBuffer)

   at Siemens.Automation.ObjectFrame.FileStorage.V11Import.V11_Import.ImportObjects(XmlReader reader, LocalizationTable localizationTable, Int32&amp; highestClusterId)

   at Siemens.Automation.ObjectFrame.FileStorage.V11Import.Import.StartImport(BackgroundWorker bgWorker, NativeMethodsHelper nativeMethods)

   at Siemens.Automation.ObjectFrame.Conversion.ConversionServiceDlc.ImportIntoNewProject(ProjectName newProjectName, NativeMethodsHelper nativeMethods, Boolean partialImport, Feedback feedback)

   at Siemens.Automation.ObjectFrame.Conversion.ConversionHandler.Siemens.Automation.ObjectFrame.Conversion.IConversionHandler.ImportIntoNewProject(NativeMethodsHelper nativeMethods)

   at Siemens.Automation.ObjectFrame.Conversion.ConversionProcess.Run()</Text>

  </Details>

  <MessageCell ServiceId="Automation-ObjectFrame-Feedbacks" MessageId="ConversionInfoTabProjectFailed" MessageClass="Error" Timestamp="2/17/2017 10:00:42 AM">

    <Number ServiceNumber="80" MessageNumber="33" />

    <Text FeedbackText="Project 'Z:\F\New folder (2)\PLC_T1\System\PEData.plf' could not be upgraded." />

    <Help HelpId="-1" HelpFile="" />

  </MessageCell>

</LogFile>