Padrino 0.10.6 problem on first request in JRuby

gistfile1.rb

# Startup completes successfully. Hitting the first URL, the following error is thrown:
#   java package `org.jruby.rack.name.name.name' does not have a method `split'

# this has also happened on javax.security.name.name.name

# Reading the stack trace, we can see that it's somehow related to 

https://github.com/padrino/padrino-framework/blob/master/padrino-core/lib/padrino-core/reloader.rb#L106

# The code in question is the "split" method call on the first line of lock!:

      def lock!
        klasses = ObjectSpace.classes.map { |klass| klass.name.split('::')[0] }.uniq
        klasses = klasses | Padrino.mounted_apps.map { |app| app.app_class }
        Padrino::Reloader.exclude_constants.concat(klasses)
      end