ReSharper 7.1.1 doesn't recognize System.* namespace

Hi:

When I enable Code Analysis in my C# project, there are a ton of "cannot resolve symbols".  They are for basic things like "double", "void", "string", as well as things like "using System;" directives.

It seems like ReSharper cannot find the path to the .net assemblies.  Is there some way for me to specify this path?

One issue that *might* be tripping it up is that I have the .Net framework, but my project has it's own copy of the .net dll's (like System.dll).

Cheers,
John