Photoshop CS2 9.0.2 Update Installation Halt on Windows Vista

I just tried installing this update on Windows Vista Ultimate, and I received the following error message:

Error Code: -5004 : 0x80029c4a
Error Message：

SetupDLL\SetupDLL.cpp (1934) PAPP:Adobe Photoshop CS2 Updater PVENDOR:Adobe Systems Incorporated (http://www.adobe.com/products/photoshop/) PGUID:BB8774C6-2751-484E-99B3-9348549E6B64
$7.1.100.1248
@Windows (6000) IE 7.0.6000.16386

Please let me know what this means and how to solve it.

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..:: www.Mash <http://www.mashup.com>up.com ::. <http://mashup.com>

I can't wait to get a 64 bit O/S for my new dual-core processor, but on the other hand this is on my mind constantly. I imagine I'll be spending months getting CS3 and Vista working together. I'm assuming there will be few who are yet at the point you are, so you're probably going to have to blaze some trails. One of the, er, umm, "perks" of beta testing.

BTW - If CS2 isn't loading, you may as well jump right to CS3 rather than spending a lot of time working through CS2 and then face the same with CS3.....just a thought....