[Tapestry-developer] Weird stale session problem after installing new version?

[Brien Voorhees]

We just upgraded from Tapestry 2.2-rc1 to 2.3-beta1 and now any time a form is submitted or a link is clicked it results in a page saying that the session is stale.  Any clues as to why that might be?  To upgrade all I did was copied the following jars (basically the ones that looked new):     ognl-2.3.0-opt.jar     commons-logging-1.0.2.jar     commons-lang-1.0.jar     net.sf.tapestry-2.3-beta-1.jar     net.sf.tapestry.contrib-2.3-beta-1.jar   Thanks for any help, Brien Voorhees