Hi 
I am trying to convert a few ppts to pdf and I am getting the following null reference exception. 
System.NullReferenceException: Object reference not set to an instance of an object. 
at .(Graphics ,  ,  ) 
at .(IL…...PPT to PDF Conversion in C#: NullReferenceExcepti: Object Reference...InterruptionToken ) at . (Presentation , Stream , Int32[] , PdfOptions...