AutoMapper installation problem

Question

I am using VS2013 and I received this error :

 

AutoMapper' already has a dependency defined for 'Microsoft.CSharp'.

 

Please advise how to resolve this.

 

Any helpers ?

 

So far, nobody seems to know the answer and it's been 3 weeks already that I posted this in various forums....why is it like nobody knows ?

 

Tks.