I am pretty sure I am the only one who gets XPage errors (feels like it some days) but just in case I am not…
Sometimes the “twistie” that shows the XPage Stack Trace is collapsed and will not respond to a click.
What to do? Use Firebug of course!
Nice workaround, very useful. It gets 'stuck' when the error page gets loaded from a partial refresh error. You can get around it by creating an error page that just contains HTML, no XPages controls. I blogged about it here http://www.intec.co.uk/xpages-error-pages-partial-refresh-and-javascript/ and I've added an error page that does just this in the latest release of XPages Help Application on OpenNTF.
Thanks Paul.
For a production error page solution, your solution is excellent.