[Geoserver-users] Premature end of file

Hi all,
When I start GEOSERVER this is the error message that I get.

5015 [CONFIG] org.geotools.factory.FactoryRegistry - Factory implementations for category MathTransformFactory:
  org.geotools.referencing.operation.DefaultMathTransformFactory
[Fatal Error] :1:1: Premature end of file.
org.geotools.validation.xml.ValidationException: Cannot parse the inputSource: Cannot configure the parser.
        at org.geotools.validation.xml.XMLReader.readPlugIn(XMLReader.java:89)
        at org.geotools.validation.xml.XMLReader.loadPlugIns(XMLReader.java:384)
        at org.vfny.geoserver.global.GeoServerPlugIn.init(GeoServerPlugIn.java:127)
        at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:1158)
        at org.apache.struts.action.ActionServlet.init(ActionServlet.java:473)
        at javax.servlet.GenericServlet.init(GenericServlet.java:256)
        at org.mortbay.jetty.servlet.ServletHolder.start(ServletHolder.java:220)
        at org.mortbay.jetty.servlet.ServletHandler.initializeServlets(ServletHandler.java:445)...

Any idea what can cause it.

Cheers,
Sasha

P.S. It seems to me that this error doesn't have any effect on normal server behavior, but still I am curious what causing this error.