They're not compartible yet, may be you'll have to wait for a few days.
For the same reasons, as to which it's release was delayed. You'll finally need to patch it, to work.
A last-minute problem was discovered. It seems that the update, much anticipated, causing concern with Dynamics Retail Management System (RMS). This problem is present also in Vista Service Pack 1.
That’s why Service Pack 3 is on hold until further notice, and that is why also the Service Pack 1 of Vista is no longer automatically downloaded in Windows Update. A decision a little strange when we know that this problem cannot be met in business, and that network administrators have tools to block the installation of updates.
Microsoft does not wait for a fix for the bug is available to offer two new service packs. The publisher will indeed put up a filter to identify configurations affected by the problem, to prevent them, and they alone, can download the SP as the patch is not available. A spokesman has said that it was currently being tested and finalized.