Hi Prasanth,
this worked. First I had the Problem that my application did not work anymore after upgrading to the latest Xamarin.Forms version
since my App is compiled for API Level 21 and the latest Xamarin.Forms relys on API Level 23. After removing all packages and references and
reinstalling Xamarin Nuget Packages to 1.4.4. now everything works except some warnings about iCCP and an unrecognized sRGB Profile.
But for my small examples I will just ignore these warnings as the app is working correctly.