XSP-help

[guillermo <gu...@teleco.upv.es>]

Hi
I have written two pages using XSP (for session tracking). Each of this
pages form one frame cell in "myframes" page.Whe I attempt to acces for
the fist time to "myframes" page, Cocoon reports me the following error
in the left frame:

Error found handling the request.

java.lang.NullPointerException
 at java.io.Writer.write(Compiled Code)
 at org.apache.cocoon.processor.xsp.XSPProcessor.process(Compiled Code)
 at org.apache.cocoon.Engine.handle(Compiled Code)
 at org.apache.cocoon.Cocoon.service(Cocoon.java:145)
 at javax.servlet.http.HttpServlet.service(Compiled Code)
 at org.apache.jserv.JServConnection.processRequest(Compiled Code)
 at org.apache.jserv.JServConnection.run(Compiled Code)

But when i access for second time to "myframes" (i press the button
actualize) page everithing works fine.

Any suggestion?

Any help would be appreciated.Thanks.