Async-CTP Installation fails

I have already uninstalled KB2635973, KB2549864 and didn't have KB2615527. Still I get this error:

Patch (C:\Users\Administrator\Downloads\Async-CTP-v3\VS10-KB0000001.msp) Install failed on product (Microsoft Visual Studio 2010 Ultimate - ENU). Msi Log: 
Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:03:15).

Solution

Resolved by uninstalling KB2645410

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