Added the original exception message to session recall errors (so you can see which class wasnt required)

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@828 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Added the original exception message to session recall errors (so you can see which class wasnt required)
+
 * Fixed that RAILS_ROOT might not be defined when AP was loaded, so do a late initialization of the ROUTE_FILE #761 [Scott Barron]
 
 * Fix request.path_info and clear up LoadingModule behavior #754 [Nicholas Seckar]

actionpack/lib/action_controller/cgi_process.rb

@@ -86,7 +86,7 @@ module ActionController #:nodoc:
           ActionController::SessionRestoreError, 
           "Session contained objects where the class definition wasn't available. " +
           "Remember to require classes for all objects kept in the session. " +
-          "The session has been deleted."
+          "The session has been deleted. (Original exception: #{e.message} [#{e.class}])"
         )
       end
     end