Cant Get Custom Error Documents to Work

[Michael Legg]

I've followed the instructions here regarding setting up Custom Error Documents on a domain - http://download1.parallels.com/Ples...nistrators-guide/index.htm?fileName=60861.htm

But when I test them they don't work at all - they just display the standard error documents. (I've only tried the 404 so far)

Is there some undocumented trick to get them working?