I've been working on a large XML processing system in which a sequence of steps implemented in Java and other technologies are orchestrated using Apache Ant. It has to run on Mac OS, Linux and Windows. It has been pretty stable for some time, but I recently set up a new Windows system and started seeing errors like this:
Exception in thread "main" org.xml.sax.SAXParseException:
Invalid byte 3 of 3-byte UTF-8 sequence.