Run an XML verification in Notepad ++. You will find that the issue is caused by an entry like:
ixia_locid="="5"
The correct entry would be:
ixia_locid="5"
Another possible scenario:
Run XML verification in Notepad ++. The issue is caused by a double / which makes the file invalid. Example:
keys="sel1459781386707"//></topicref>
The correct entry would be:
keys="sel1459781386707"/></topicref>