It means the event context isn't available (a Seam component has been called when the Seam lifecycle isn't available). It normally occurs when something has gone wrong somewhere higher up the stack. What does the log look like from the last page laod?
I managed to find a thread on this forum that talked about . I had it set to true as I copied the components.xml from an older project. When I set it to false, the problem went away.
is what's missing from the previous post at the end of the first sentence.