There is no direct way to convert Ms-Excel file to Ms-Words files, you will have to use two different components for this purpose. Aspose.Cells and Aspose.Words.
Please share your code in ConvertXls2Docs, we will look into it and help you asap.
Actually the code is not mine I copied it on one of your sample source. Iam attaching the cs file in this post
Thanks for your code.
Since code is also using Aspose.Words, so it is difficult to say, if the exception is occurring because of Aspose.Words or Aspose.Cells.
Also, I am afraid, the code might be using older version of Aspose.Cells. I need a runnable sample using the latest version of Aspose.Cells which can be downloaded from here:
Aspose.Cells for .NET v126.96.36.199 to look into it.