I have a Dell Precision M6600 that I've installed Windows Developer Preview on. When trying to install the Dell Feature Enhancement Pack (APP_WIN_R312092.EXE), I get the following error:
Dell Feature Enhancement Pack requires .NET Framework 4.0 (Client Profile or Full) to be installed on the target system. Please rerun the setup after installing .NET 4.0 Framework.
I saw this once with another application. I simply ran the .NET 4.0 Framework installer and the application worked after that. Maybe there is a component not installed/registered as part of the native 4.0 installation that the app needs.
The first thing I tried was to install .NET Framework 4.0. The installer informed me that .NET Framework 4.0 was already installed. I also tried installing Windows 7.1 and .NET Framework 4.0 SDK, but this didn't solve the problem.