Bitlocker Hangs With Duplicate Usb Key

I am using windows 7 ultimate with bitlocker running on the boot drive. My laptop doesn't support tpm, so i am booting successfully from a usb key. Everything has been working great. Today i bought two 'nicer' 8gb usb keys (they look better on my car keyring). I have tried copying the . Bek file to them, i have tried using the bitlocker manager to 'duplicate' my boot key. But nothing seems to work.

My original key works fine. But both of these new keys hang the computer immediately after windows says "windows bitlocker drive encryption key loaded. Remove key storage media. " My original key is a 4gb one. But that is the only difference i can see. Any suggestions?

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Bitlocker Fails With Duplicate Usb Key

I have recently upgraded to windows 7 ultimate. I have done so to use bit locker. I have successfully encrypted the hard drive, changed my group policy and created a key on a usb key. This is all works. I have created a duplicate key on a different usb key, but pc will not boot - it hangs on the following screen windows bitlocker drive encryption key loaded remove key storage media. Removing the usb stick makes no difference. I have verified that the file has copied correctly to the usb stick. I have also tried with several other sticks. Ny thoughts welcome.

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Here's the clearest description i can can up with:

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