Thanks for the quick response.

The version I am using is 2015.1.2112.

I provided a code snippet and example file in my initial post. Did you not get those? Just run the code using the attached xlsx file and the issue should reproduce on the "workbook.Save(@"C:\Users\Paul\Downloads\new.xlsx");" call.

Thanks,

Paul

Hello,

In the initial post there was one xlsx file with empty rows and just one value in cell A10 (number 1) and 3 rows of code. In order to create a sample I will need more code and information. The thread is under "ASP.NET MVC Helpers" section and I am wondering if it is related to them.

Is it possible for you to provide a small sample that is showing the issue, this would be highly appreciated.

Yes, that is the file where the bug occurs. Please use the code I provided (Remove that exact line only) with that exact file (don't make any changes to the file). The error should occur even though there is not much in the file. This was one of the points I made in my original post. I removed most information from the file to try to determine what the issue was. The file I've provided is a bare-bones example where the issue duplicates. The error is very non-descriptive and I wish I could provide you more information, but I cannot.

Please let me know if you are able to re-create the error with the code and the file I provided.

Thanks,

Paul

We have similar issue with following code which we use to convert .xls to .xlsx. It fails to convert some of the files. Is this the known issue in Vol 13.1 for WinForms?

        public static void ConvertXLStoXLSX(string oldFile, string newFile)
        {
            var formatt = Infragistics.Documents.Excel.Workbook.GetWorkbookFormat(oldFile);
            Workbook wb = Infragistics.Documents.Excel.Workbook.Load(oldFile);
            wb.SetCurrentFormat(WorkbookFormat.Excel2007);
            wb.Save(newFile);
        }

Here is the stack trace.

   at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
   at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
   at Infragistics.Documents.Excel.Serialization.WorkbookReferenceBase.GetScopeDictionary(String name)
   at Infragistics.Documents.Excel.Serialization.WorkbookReferenceBase.GetNamedReference(String name, Object scope, Boolean createIfNotPresent)
   at Infragistics.Documents.Excel.Formula.InitializeSerializationManagerVisitor.RetainNamedReference(NamedReferenceBase& namedReferenceBase)
   at Infragistics.Documents.Excel.Formula.InitializeSerializationManagerVisitor.VisitNameToken(NameToken token)
   at Infragistics.Documents.Excel.FormulaUtilities.Tokens.NameToken.Accept(FormulaTokenVisitor visitor)
   at Infragistics.Documents.Excel.FormulaUtilities.Tokens.FormulaTokenVisitor.VisitAll()
   at Infragistics.Documents.Excel.Formula.InitializeSerializationManager(WorkbookSerializationManager manager, Worksheet owningWorksheet)
   at Infragistics.Documents.Excel.Serialization.WorkbookSerializationManager.InitializeReferencesHelper.FormulaCallback(Worksheet owningWorksheet, Formula formula)
   at Infragistics.Documents.Excel.Workbook.IterateFormulas(IEnumerable`1 namedReferences, IterateFormulasCallback callback)
  at Infragistics.Documents.Excel.Serialization.WorkbookSerializationManager.InitializeReferences()
   at Infragistics.Documents.Excel.Serialization.Excel2007.Excel2007WorkbookSerializationManager.InitializeReferences()
   at Infragistics.Documents.Excel.Serialization.WorkbookSerializationManager.Save()
   at Infragistics.Documents.Excel.Workbook.SaveXLSXFile(Stream stream, IPackageFactory packageFactory)
   at Infragistics.Documents.Excel.Workbook.SaveHelper(Stream stream, IPackageFactory packageFactory)
  at Infragistics.Documents.Excel.Workbook.Save(String fileName, IPackageFactory packageFactory)
   at Infragistics.Documents.Excel.Workbook.Save(String fileName)

Any Suggestions?