"Piyush Kapadia" <piyush.kapadia@gmail.com> wrote in message two issues persists related to XML - 1. When xml out put file opened on Internet Explorer it results in following legitimate error - The following tags were not closed: boost_serialization. Error processing resource 'file:///C:/Documents and Settings/piyus... Some how it failes to write </boost_serialization> at the end of the file, I don't know why ??? I have included test code and I am using VC 7. This is usually caused by code like the following: { ..ostream os("file"); ..oarchive oa(os); oa << .... os.close(); // close or destroy output stream // destructor on oa called after stream closed } Robert Ramey