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C compilation no working

I'm running Mathematica 9 on a 64 bit Windows 8.1 laptop. I'm having no luck getting C compilation to work.

Needs["CCompilerDriver"]

Compilers[Full]  

returns

{} 
Compilers[]
{}

$Packages shows CCompilerDriver entries

$ContextPath has CCompilerDriver as its first entry

I have the following compilers installed:

  • Microsoft Visual Studio Professional 2013
  • Intel C++ Composer XE