Problem processing namespace

Hi together,

I have a weird problem occurring when xerces and xalan process the
namespace xmlns:hl="java:net.sf.xslthl.ConnectorSaxon6" contained in
highlighting\common.xsl.

The exception is not really meaningful:
(Position des Fehlers unbekannt) java.lang.IllegalArgumentException: name

(Position des Fehlers unbekannt) => (Position of Exception unknown)

Has anybody seen this error before?

Cheers, Tobias