uninitialized constant Beanstalk::Connection (NameError)

[abbood]

I'm running two ec2 instances that are running beanstalkd queues each (using a cron job).. If i do a ps aux | grep bean i get this on machine 1 (where the error happens):

beansta+ 19472  0.0  0.0  23776  3172 ?        Ss   Feb08   8:26 /usr/bin/beanstalkd -l 0.0.0.0 -p 11300

and this on machine 2 (where it's working fine):

beansta+ 21172  0.0  0.0  23660  3084 ?        Ss   Feb02   8:13 /usr/bin/beanstalkd -l 0.0.0.0 -p 11300

bubut when i run

./beanstalk-queue-stats.rb localhost:11300

on machine 1, I get this error:

./beanstalk-queue-stats.rb:6:in `<main>': uninitialized constant Beanstalk::Connection (NameError)

which means it's failing here B = Beanstalk::Connection.new $*[0]

note: I've verified that my local and global gems are identical on both instances: