Bitlocker and a USB device

> I'm trying to setup a 32 bit Vista Enterprise system with Bitlocker turned
> using a USB device -
>
> I'm almost there - But I can not get past the below error -
>
> When I set finish setting up the bitlocker, I'm asked to reboot -
> When the system reboots it appears to read the USB device but after I log
> in
> I receive the below message -
>
> BitLocker could not be enabled.
>
> The BitLocker startup key or recovery password could not be read from the
> USB device. Ensure the USB device is plugged into the computer, then
> turn
> on the BitLocker ans try again. If the Problem persists contact the
> computer
> manufacturer for the BIOS upgrade instructions.
>
> No encryption applied, any changes made to c: during the Bitlocker setup
> will be removed-
>
> I'm waiting on feed back - But at this time I believe I have installed the
> correct BIOS Upgrade -
>
> Is there anything else I could check out.