Project incompatible

Dec 7, 2013 at 12:59 PM
Edited Dec 7, 2013 at 1:02 PM
Hello, I'm trying to use this library with no succes. I'm using Visual Studio 2012 on a Windows 7 (64bits) machine. I get this error, I wonder if someone could help me:

Image

I've unblocked the downloaded compressed file.
At StackOverFlow they recommend to open manually the project file with an editor and to change TargetFrameworkVersion to 4.0. Not useful here because it's already at that version.

PD.: I can't open any of the files in the downloaded folder: samples nor other files.