Windows 2008 R2 - windows management framework 3.0 install error "the update is not applicable to your computer"

Read this
http://blogs.msdn.com/b/powershell/archive/2012/03/23/troubleshooting-windows-management-framework-3-0-beta-installation.aspx

and this
http://technet.microsoft.com/en-us/library/hh847837.aspx#BKMK_InstallingOnWindows7andWindowsServer2008R2

Solution:

• Install Windows 2008R2 Latest Service Pack (do this manually, windows update does not automatically install SP1)
• Install dot net 4.5 
• http://go.microsoft.com/fwlink/?LinkID=242919
• Run install
• http://go.microsoft.com/fwlink/?LinkID=240290