Sytem.Exception while using XmlDiffPatch.dll

Question

I am using XmlDiffPatch.dll and XmlDiffPatch.View.dll for Xml comparison.

I get a "System.Exception: no matching node: 31" error in the below lines.

 

 XmlDiffView dv = new XmlDiffView();

XmlTextReader orig = new XmlTextReader(sourceFilePath);

XmlTextReader diffGram = new XmlTextReader(fileStream); 

dv.Load(orig, diffGram); 

 

Can anyone please help me to solve this error?