Does not locate Windows Phone 7.1 assemblies

SA is unable to locate the Windows Phone mango (7.1) assemblies. It uses the WP 7.0 assemblies located in:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Silverlight\v4.0\Profile\WindowsPhone

It should be looking in:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Silverlight\v4.0\Profile\WindowsPhone71

I am using version 6.5.2.21.

Cheers,
Daniel