Install F# for Silverlight 4.0 runtime

The machine configuration is always a painful process unless it works as installation package promises. Today the Silverlight4_Tools.exe drives me nuts when I try to install F# for Silverlight 4 runtime. No matter how many times you run that EXE file, SL4 just won't be picked up by F#!

Here is a way to verify the SL is actually installed:

1. go to C:\Program Files (x86)\Microsoft F#\Silverlight\Libraries\Client
2. make sure there is a folder called 4.0 created

In order to make sure the folder is actually created by the installer, follow steps listed below:

1. download the "Microsoft Silverlight 4 Tools for Visual Studio 2010", do not run it
2. extract files using WinRAR
3. find "FSharpRuntimeSL4.msi" in the extract folder
4. run the "FSharpRuntimeSL4.msi"