Default Icons are missing

[sedsell]

I am using a richfaces tree and calander on my jsf web page.  The web server is Tomcat 6.  When I install the project on a PC, everything looks good, however when I install it on Sun Solaris UNIX, the collapse/expand icons for the tree and the icon for the calander do not display.  The components do work, just missing their icons.  I have the three jar files in the WEB-INF/lib directory of my project (richfaces-api-3.2.2.SR1.jar, richfaces-impl-3.2.2.SR1.jar, richfaces-ui-3.2.2.SR1.jar).  Any idea what I am missing on the UNIX install (Tomcat setting, Richfaces images, etc).

[ilya_shaikovsky]

check for exceptions at server log.

[sedsell]

There is an exception in the Tomcat log, java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment.  I did a google search on this and found that -Djava.awt.headless=true has to be added to CATALINA_OPTS when the server is started.  Once this was done, all RichFaces icons were displayed correctly.  Thanks for the tip Ilya.