How to diagnose XSLT problems with Firefox?

Question

Is there a way to see error messages / debug information on what happens when Firefox 3 applies an XSLT transformation? In Firefox I am getting only the content of the text nodes of the XML document. The stylesheet is in the same directory and is bound with <?xml-stylesheet ...>. In Internet Exporer it works fine and Altova XML Spy does not complain, either. I just don't know how to find out what's wrong.

Answer 1

It turned out that the culprit was the NoScript plugin. In case of XSLT errors you would usually get an error page as well as an entry in the error console in the extras menu. But all I got in this case is a crossed out icon in the status bar. 8-}