Express Editoin V12 Problem with Vista Business 64 BIT

Database
ATR
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Express Editoin V12 Problem with Vista Business 64 BIT

Hi all,

Is there anyone who can tell me, if the Express Edition can be installed only on Vista 32 BIT and not on Vista 64 BIT? I've got an error message while the installation of the Teradata Database Express 12.0: "This is a 32 bit package and cannot be installed on this system". I'am using Vista Business 64 BIT.

Thanks in advance
Andreas