I just upgraded from an i7-2600k to an i7-3930K on a P9X79 Deluxe and everything went as smooth as silk until I tried to install the Bluetooth driver. The installation process went about half way through and then I got this message:
This is the full install log:
Error 1935.An error occurred during the installation of assembly component {837BF1EB-D770-94EB-A01F-C8B3B9A1E18E}. HRESULT: 0x80073712. assembly interface: IAssemblyCacheItem, function: Commit, assembly name: Microsoft.VC80.ATL,type="win32",version="8.0.50727.5592",publicKeyToken="1fc8b3b9a1e18e3b",processor Architecture="amd64"
=== Logging stopped: 3/10/2012 9:35:44 ===
I found a few similar topics that related to a Windows Update issue that didn't help.