the namespace "system" could not be added to the project

Question

I am working on a C# PCL. The targets include Windows Phone, iOS, and Android (all via Xamarin). Whenever I add a new class, I get a popup starting with "The namespace system could not be added to the project." It then proceeds me to warn me that things might not work. Well, they do work, but the popup is annoying. Can I stop it?

Answer 1

I guess this is a problem with the Framework version of the namespace systemand your project. Confirm they both match the same framework.

I recommend you take a look over this link, which addresses a similar kind of issue. Usually when the references are not proper, you may get this kind of issue.