Hi,
We are a team of 5 persons, one person of the team have configurated the code of us project and now in your machine he can build this project in 64 bits.

He has given the code to us. The problem is that we can't build the solution:
We open the project, we choose the platform x64 and configuration Debug, when us try to build the project, visal studio skip all the projects of the solution (and in configuration manager we see all the projects are selected), we see this message in the out window:

"Project not selected to build for this solution configuration"

If we try to see the properties of one project we get this message error:

"The operation could not be completed."

What is the problem? We need install something to build the solution in us machine?

Can any help me please? Thanks.