NDepend - Several .NET assemblies have the name {MyAssembly} but they are different

I've just started using NDepend and am trying to analyse a solution.

This warning appears when I add the solution's assemblies and it will not load any assemblies with the warning:

Cant' load the assembly {MyAssembly}: Several .NET assemblies have the name {MyAssembly} but they are different: ...list of the .dlls in the project which contain this assembly

What could be causing this? I am using a common AssemblyInfo.cs file as well as the standard one to set some common attributes but there are no conflicts between these attributes.