I am developing a small windows phone application, some days I worked fine in building and deploying my Phone APP in to my phone. later I installed visual studio 2013 with update 3 ,after this installation when ever I am trying to build windows phone application I got an error message as "The Silverlight SDK 4 is not installed but I have installed Silverlight SDK 4.
In the designer view I unable to see designer view Main.xaml page and indicating unhandled exception message as "object reference not set to an instance of an object" and Main.xaml page is loaded completely with an exception message
Can anyone please suggest me how can I resolve this problem.