Crashes immediately due to DateTime constant

[d3crypt3d]

E, [2014-05-22T14:29:46.833504 #3792] ERROR -- : RubyAMI::Stream crashed!
NameError: uninitialized constant RubyAMI::Event::DateTime
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/event.rb:9:in `initialize'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/lexer.rb:71:in `new'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/lexer.rb:71:in `parse_message'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/lexer.rb:56:in `block in parse_buffer'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/lexer.rb:48:in `each'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/lexer.rb:48:in `parse_buffer'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/lexer.rb:29:in `<<'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/stream.rb:73:in `receive_data'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/stream.rb:39:in `block in run'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/stream.rb:39:in `loop'
        /var/lib/gems/1.9.1/gems/ruby_ami-2.2.0/lib/ruby_ami/stream.rb:39:in `run'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in `public_send'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in `dispatch'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/calls.rb:122:in `dispatch'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/actor.rb:322:in `block in handle_message'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/actor.rb:416:in `block in task'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:55:in `block in initialize'
        /var/lib/gems/1.9.1/gems/celluloid-0.15.2/lib/celluloid/tasks/task_fiber.rb:13:in `block in create'