Dash board can not connect to build loop and cruisecontrol throws exception

Hi,

I am using cruise control for first time. I use cruise control 2.8.2 to run
my ant build file. It contains two part: 1. build and package, 2. run test
When it start to run tests, after about twenty minutes, cruise control dash
board tells me:  Unable to connect to build loop at vpabuild.
 And if I change to http://host:8080/cruisecontrol page, click my page, it
gives me the following exception.   Is there any advice?

Error transforming 'log20091112181628Lbuild.9': Failed to compile
stylesheet. 1 error detected.
net.sourceforge.cruisecontrol.util.CCTagException: Error transforming
'log20091112181628Lbuild.9': Failed to compile stylesheet. 1 error
detected.
             at
net.sourceforge.cruisecontrol.taglib.XSLTag.transform(XSLTag.java:117)
             at
net.sourceforge.cruisecontrol.taglib.XSLTag.updateCacheFile(XSLTag.java:280)

             at
net.sourceforge.cruisecontrol.taglib.XSLTag.prepareContent(XSLTag.java:268)
             at
net.sourceforge.cruisecontrol.taglib.XSLTag.doEndTag(XSLTag.java:303)
             at
org.apache.jsp.main_jsp._jspx_meth_cruisecontrol_xsl_0(org.apache.jsp.main_jsp:1061)

             at
org.apache.jsp.main_jsp._jspService(org.apache.jsp.main_jsp:421)
             at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
             at
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
             at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)

             at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
             at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
             at
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
             at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
             at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
             at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
             at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
             at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
             at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
             at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)

             at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)

             at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
             at org.mortbay.jetty.Server.handle(Server.java:324)
             at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
             at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)

             at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)
             at
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
             at
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
             at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)

             at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

Caused by: javax.xml.transform.TransformerConfigurationException: Failed to
compile stylesheet. 1 error detected.
             at
net.sf.saxon.PreparedStylesheet.prepare(PreparedStylesheet.java:176)
             at
net.sf.saxon.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:139)

             at
net.sf.saxon.TransformerFactoryImpl.newTransformer(TransformerFactoryImpl.java:91)

             at
net.sourceforge.cruisecontrol.taglib.XSLTag.newTransformer(XSLTag.java:131)
             at
net.sourceforge.cruisecontrol.taglib.XSLTag.transform(XSLTag.java:99)
             ... 28 more


Best Regards,

Qin Yue Chen (陈沁悦)
System Performance Tools
IBM China Systems & Technology Laboratories
http://cs.opensource.ibm.com/projects/vpa
http://www.alphaworks.ibm.com/tech/vpa

  It is a sin to over report, but it is a crime to under report.

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