HtmlUnit - ElementNotFound Exception

Question

I'm using HtmlUnit [see this], and I bumped into a weird problem:
I'm trying to call a page, click a button and retrieve the subsequent page. It works fine, but sometimes it bumps out with ElementNotFoundException when I try setting the value attribute for a field in the retrieved page.

I tried adding a Sleep(1000), but it doesn't help...

Any idea?

Answer 1

Try adding a catch of ElementNotFoundException and do a print of page.toXml() out to the console when it happens. Chances are you are not getting the page you think you are getting.