[CentOS] upstart CentOS vs upstart Ubuntu is there any difference between them?

I'm moving some server configurations from Ubuntu Server 12.04 to CentOS
6.6. Now I'm working on `/etc/init` script that should be handled by
`upstart` at both OS as far as I know. The files on both server are the
same and I mean the same at content level and also at path level and
permissions level, is the exactly copy from Ubuntu to CentOS. I'm having
some issues with upstart at CentOS since scripts doesn't start and I can't
find why (the cause). This is the output from `initctl list` at Ubuntu
server:

# Ubuntu 12.04
root at qa:/etc/init# initctl list
// rest of processes goes here
pdoneVendorBroker start/running, process 854
repToolBroker start/running, process 3705
emailBroker start/running, process 3738
cmeBroker start/running, process 3760
messageBroker start/running, process 3727
shareEventHandler start/running, process 3686
edetailBroker start/running, process 3749
pdoneLoginProctor start/running, process 3716

All the processes has been started at OS boot, that's fine.

This is the output from CentOS server:

# CentOS 6.6
root at staging:/etc/init# initctl list
// rest of processes goes here
pdoneVendorBroker stop/waiting
repToolBroker stop/waiting
emailBroker stop/waiting
cmeBroker stop/waiting
messageBroker stop/waiting
shareEventHandler stop/waiting
edetailBroker stop/waiting
pdoneLoginProctor stop/waiting

None processes has been started after OS boot, and that's wrong. Why? What
I'm missing here? Can any give me some advice?

At CentOS I've tried also to start the process manually by running this:

initctl start messageBroker

And this is the output at console:

messageBroker start/running, process 3587

But if I run the command `initctl list` I didn't see the process started:

initctl list
rc stop/waiting
tty (/dev/tty3) start/running, process 2565
tty (/dev/tty2) start/running, process 2562
tty (/dev/tty1) start/running, process 2558
tty (/dev/tty6) start/running, process 2577
tty (/dev/tty5) start/running, process 2574
tty (/dev/tty4) start/running, process 2571
plymouth-shutdown stop/waiting
control-alt-delete stop/waiting
debug stop/waiting
rcS-emergency stop/waiting
kexec-disable stop/waiting
pdoneVendorBroker stop/waiting
quit-plymouth stop/waiting
rcS stop/waiting
prefdm stop/waiting
repToolBroker stop/waiting
init-system-dbus stop/waiting
emailBroker stop/waiting
splash-manager stop/waiting
cmeBroker stop/waiting
start-ttys stop/waiting
messageBroker stop/waiting
shareEventHandler stop/waiting
edetailBroker stop/waiting
pdoneLoginProctor stop/waiting
rcS-sulogin stop/waiting
serial stop/waiting

This is the content for the file `/ etc/init/messageBroker.conf`:

    description "messageBroker"

    start on runlevel [234]
    stop on runlevel [0156]

    respawn
    exec php /usr/local/bin/messageBroker/messageBroker.php
    post-start script
        PID=`status messageBroker| egrep -oi '([0-9]+)$' | head -n1`
        echo $PID > /var/run/messageBroker.pid
    end script

    post-stop script
        rm -f /var/run/messageBroker.pid
    end script

Why it's not starting? What is wrong?