Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)

Web Part Error: The tag contains duplicate '__designer:IsClosed' attributes. Correlation ID: b38e80a1-4448-300a-8e3a-973615ca9561.

Error Details:
[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.Parse()
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternalHelper(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControlsInternal(DesignTimeParseData data, Boolean returnFirst)
  at System.Web.UI.DesignTimeTemplateParser.ParseControl(DesignTimeParseData data)
  at System.Web.UI.Design.ControlSerializer.DeserializeControlInternal(String text, IDesignerHost host, Boolean applyTheme)
  at System.Web.UI.Design.ControlParser.ParseControl(IDesignerHost designerHost, String controlText)
  at Microsoft.Web.Design.Server.ServerDocument.Microsoft.Web.Design.Server.IServerDocumentDesigner.ParseControl(String outerHtml)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressUsingMicrosoftWebDesigner(SourceContent sourceContent, String allRegisterDirectives)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CompressInOrder(Deserializer firstMethod, Deserializer secondMethod, SourceContent sourceContent, String allRegisterDirectives, Boolean isClosed)

[HttpParseException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessException(Exception ex)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
  at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)

[HttpException: The tag contains duplicate '__designer:IsClosed' attributes.]
  at System.Web.UI.TemplateParser.ProcessError(String message)
  at System.Web.UI.TemplateParser.ProcessBeginTag(Match match, String inputText)
  at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)