RSSFeed for FBA based site?

I have FBA sharepoint site. I am trying to use discussion board RSS feed on to Main site home page. When I used RSS Viewer web part. I am getting below error.

 RssWebPart: Exception handed to HandleRuntimeException.HandleException 
System.Xml.XmlException: Name cannot begin with the ' ' character, 
hexadecimal value 0x20. Line 40, position 24.     at System.Xml.XmlTextReaderImpl.Throw(Exception e)  
 at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)    
 at System.Xml.XmlTextReaderImpl.Throw(Int32 pos, String res, S开发者_高级运维tring[] args)    
 at System.Xml.XmlTextReaderImpl.ParseQName(Boolean isQName, Int32 startOffset, 
    Int32& colonPos)     
 at System.Xml.XmlTextReaderImpl.ParseElement()     
 at System.Xml.XmlTextReaderImpl.ParseElementContent()    
 at System.Xml.XmlTextReaderImpl.Read()     
 at System.Xml.XmlLoader.LoadNode(Boolean skipOverWhitespace)    
     at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc)     at System.Xml.XmlLoader....

What will be the problem is?

Are you able to link the RSS endpoint in question? My guess is that your RSS's XML has a node with a space as the first character in it's name:

< item /> instead of <item />