Processing instrunction outside the root element

[Smith, Brook non Unisys]

Hi,

 

We have a intermittent issue where occasionally, a document with a
processing instruction outside the root element (at the very end of the
document) causes a parsing exception 

"org.xml.sax.SAXException: XML document structures must start and end
within the same entity."
 
If the processing instruction has white space after it will parse OK.
 
Any help you can give would be appreciated.
 
Thanks, Brook.