"Assembly Same Simple Name already been imported" error
You have two assemblies with the same name (not file name, assembly name). There are two solutions to this:
- Rename one of the assemblies from the project's properties and recompile.
- Set up Strong-Name Signing on the assembly to allow two separate versions of the same assembly to coexist.
If you are working with the new .csproj version, you may encounter this problem after you add a reference to another solution project, if the reference already exists as an Assembly Dependency (this reference may have been added automatically by Visual Studio).
On Solution Explorer, expand the conflicting project, navigate to Dependencies->Assemblies and check that there is not an existing reference to the assembly that is raising the conflict. If it exists, just delete it and the conflict will be resolved.
You can see the simple name by opening project properties and selecting Assembly Information:
To sign the assembly you need to select Signing tab and create or select signing key:
