Macbook Pro won't book from USB flash drive

I have a brand new Macbook Pro with the thunderbolt. The internal hard drive works great and I can boot up from it just fine. But we want to create an image on a USB flash drive that we can use when troubleshooting the other Macbook Pro's we have at the office. So I got a 16 gb flash drive which should be big enough. I ran the white Snow Leopard DVD and tried to put the OS on the USB flash drive. When it tried to reboot on the Macbook Pro it got the error screen which some weird code and said that you computer needs to be restarted. As long as the USB flash drive was connected it wouldn't boot.
So I wanted to see if this was hardware specific so I tried it on an IMac. I was able to create a OS X bootable USB Flash Drive and was able to boot the IMac with it with no trouble. Having gotten ti to work on the IMac I tried it again on the Macbook Pro, still get the error screen when it tries to boot up.
Is there anything special I need to do to get this to work? It's crucial to our organization to get this to work. Thanks.

Hi R,
You can always book it with you agent, don't you?
Ok, sorry for that, getting on. Try to use Carbon Copy Cloner to create the copy.
The issue can be related to USB devices and/or connectors, did you try other USB port? Do you have the same boot problem with other USB devices? The active USB connection preventing boot are frequently seen.
Good luck, K.

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