his is not Rack/Sinatra relevant bug, but Ruby 1.8.6 bug.
>
> After I tried this gem with Ruby 1.8.7 installed through 'rvm', this
> exception dissapears and all stuff is working normally now.
>
> I hope we will have Ruby 1.8.7 soon ;-)
>
That rules out Rack-1.2 for EPEL5 and EPEL6, as ruby is still 1.8.6 in
those. I really wish Red Hat would have moved up Ruby to 1.8.7 in
RHEL6, but they didn't.
Does rack-1.1 work for Sinatra currently?