I have a IOS project which I haven't opened for about a year and it was developed using Xamarin for Visual Studio 2013. Now I have to make some changes to the app and after some problems compiling the project I installed all available updates for Xamarin and Visual Studio 2013, but that only made things worse so I decided to install Visual Studio 2015 and update the Mac and Xcode to the latest version.
Installing VS2015 seemed to solve all my previous problems and I can now compile the project and run it fine, but when I open a Storyboard in the project I get a yellow warning bar at the top that says Custom components are not being rendered because problems were detected.
I have no idea why this message appears since I only use standard components (or maybe "components" means something else than those in the Toolbox?). Does anyone know what the reason for this message is? How can I troubleshoot and get rid of it?