Build failed. Could not find type 'System.Globalization.SortVersion'

Question

Somewhere along the line in the last week, Xamarin on my Windows machine started giving the above mentioned error any time I compile with MONO.

Specifically occurs when Project|Active Runtime is MONO - never happens when runtime is Microsoft.NET.

I've tried uninstalling/reinstalling MONO runtime (mono-3.2.3-gtksharp-2.12.11-win32-0.exe)

Any clues? Google searches come up with pretty much nothing

Answer 1

I get the same error today, (after an update yesterday to 4.2.4 Build 35) There is a bugfix here

Build works fine on another PC without the latest update (4.2.3 build 59). I guess the answer is to roll back to 4.2.3.

You can get it from your account page at Xamarin.com >> Downloads >> View all versions.

Answer 2

The solution from here says that you should either uncheck the box "Use MsBuild" in project settings or use .NET for building but then run with Mono if you want to test runtime compatibility.