error running struts on iPlanet

[Fletcher, Ken]

Has anyone run across this error while trying to deploy a struts app to
iPlanet 6.0 SP2?
 
Error: 500 SC_INTERNAL_SERVER_ERROR
JSP Error: Class was not found for :html
 
It runs fine using straight JSP's but when I use the struts-html.tld it
bombs.
 
Thanks,
Ken