bumped the required version of Rack to 1.0.1, but the actionpack-2.3.5
gemspec doesn't reflect that. The result is that installing 2.3.5 on a
system with 2.3.2 installed (which grabs rack-1.0.0) fails when the
server starts.
Patch here:
https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/3558
Sorry to bug the list about a tiny (one character!) issue, but it
didn't appear to be going anywhere on LH.
--Matt Jones