Everything works fine with docx4j 2.6.0 jar file, but simply replacing that jar with the 2.8.1 jar file (from 30th Sept) and running some code which produces a report in Word 2007 format (writing only, no reading of docx files) gives the following error message:
18-Dec-2012 14:08:23,270 DEBUG [] - StasysLogger.debug() - Successfully loaded and initialised generator for Management
Exception in thread "pool-1-thread-1" java.lang.ExceptionInInitializerError
at org.docx4j.openpackaging.parts.JaxbXmlPart.<init>(JaxbXmlPart.java:79)
at org.docx4j.openpackaging.parts.JaxbXmlPartXPathAware.<init>(JaxbXmlPartXPathAware.java:64)
at org.docx4j.openpackaging.parts.WordprocessingML.DocumentPart.<init>(DocumentPart.java:157)
at org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart.<init>(MainDocumentPart.java:76)
at org.docx4j.openpackaging.packages.WordprocessingMLPackage.createPackage(WordprocessingMLPackage.java:432)
at ...