I solved this problem by upgrading the version of jfor that was running in my Cocoon. (Command-line Cocoon executes the Jetty(?) server container at port 8888)
So it's not a Xalan issue as first thought. I still don't like the commented out e.printStackTrace() in org.apache.xalan.transformer.TransformerImpl -----Forwarded Message----- From: John Austin <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: Xalan issue in Cocoon java.util.EmptyStackException Date: Mon, 20 Oct 2003 19:12:54 -0230 More info: I found the following code near org.apache.xalan.transformer.TransformerImpl line 3364: catch (Exception e) { // e.printStackTrace(); if (null != m_transformThread) postExceptionFromThread(e); else throw new RuntimeException(e.getMessage()); // Assume we're on the main thread. } Among other things, this error check doesn't give enough info. At the very least the e.printStackTrace() should be made operative. -- John Austin <[EMAIL PROTECTED]>