Moved to RichFaces forum.
Please post more information - stack traces, application code, etc.
I have a page in which i am using a rich:tree which is to be opened onload of the page. Its working fine but once in a while (1 or 2 times out of 10 attempts) when i try to navigate to that page it gives a blank page. If a see the stack trace i can see null pointer exception once and some thing else for the next time.If i do not expand the tree onload of the page i dont see this error. I am using jsf1 and richfaces 3.0.1.