After salesforce.com made their last update (about 2 weeks ago) one of my custom visualforce pages returns an error.  No line numbers or debugging information in the log.

Visualforce Error Help for this Page  The configuration of your org has changed, please reload the page. Missing dependent object: Field: Lead.Jigsaw 

The error occurs when I click a command button.  To try to isolate the problem I commented out the code behind the button so it does nothing and I still receive the error.  I also know that the controller construction is not working with leads in any way.  All it is doing is get a few parameters.  Also note that I did not enable Jigsaw in my org.

Any ideas?

Thank you,

Michael