Exception when creating a Document object



For several OneNote documents I receive the following exception when calling the constructor of “Document”:

bei System.Collections.Generic.Dictionary`2.get_Item(TKey key)
bei ​ .( )
bei .( )
bei .( )
bei .()
bei . ()
bei .( ​ )
bei .(Stream )
bei .(Stream , String )
bei .(Stream , String , Boolean )
bei .(Stream , Document , LoadOptions )
bei Aspose.Note.Document.(String , LoadOptions )
bei Aspose.Note.Document…ctor(String filePath, LoadOptions loadOptions)
bei Aspose.Note.Document…ctor(String filePath)

The attached message is: “Der angegebene Schlüssel war nicht im Wörterbuch angegeben.” Translated from German to English: “The given key was not contained in the dictionary.”

Is this a known issue? Is there something that a developer can do about it?

Many thanks in advance.

Best regards,



Thanks for the error trace.

Could you please share sample document(s) to evaluate your issue. You may zip the document(s) prior attaching, we will check it soon.