installing nuget package “same key has already been added.”

Question

i am trying to install Microsoft.Bcl.Build 1.0.14

nuget returns

Installing \'Microsoft.Bcl.Build 1.0.14\'. Successfully installed \'Microsoft.Bcl.Bu         


        

Answer 1

There is yet another path that produces this error. Here is how to reproduce it:

(1) Create a nuget package from a VS project (project 1).
(2) In project 2 that references project 1, install the project 1 nuget package.
(3) the installation will fail with the "same key" error.

The solution is to simply remove the reference to project 1 before installing the nuget package.