OS: Is Windows2008 64Bit (Was missing in List)
Hudson ver. 1.280
Mantis Plugin Versin 0.5.2
Mantis Version 1.1.4
Issue ID Pattern: #%ID%
Updated relevant Mantis issues: Yes with (Keep note private)

We have made some minor ui and some workflow change in mantis.

Hudson successfully updates the mantis issue and in Hudson the correct issue
links are visible. But the build fails with this message if Hudson founds an issue:

[MANTIS] Failed to add note to Mantis issue #3.221 (cause:
org.xml.sax.SAXParseException: Content is not allowed in prolog.).

I am willing to test something if need.