"But the package does not contain any assembly.."

Trying to install .Redis into our application and I am getting the following error:

Severity Code Description Project File Line Suppression State
Error Could not install package ‘ServiceStack.Interfaces 4.5.8’. You are trying to install this package into a project that targets ‘.NETFramework,Version=v4.0’, but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. 0

Visual Studio 2015 - Nuget 3.5.0 which is supposed to be good enough… no version greater than that either.

Decided to try an older version and 4.0.62 installed just fine, just not 4.5 of any version. Am I doing something here? Are the versions 1:1 with a given .NET version?

The last version to support .NET 4.0 was v4.0.62, you’ll need to upgrade to .NET 4.5 to use versions of ServiceStack > 4.5.x

Thanks! Was not aware it was version specific like that.