I'm working on Silverlight project, which has done in few months back. When project is loaded, I've seen some of the references are missing. I tried to add it from assembly, but couldn't find any details.
I've already installed the both Silverlight SDK 5 & Silverlight_Developer (https://www.microsoft.com/en-us/download/details.aspx?id=28359).
Can someone help me to sort out this.
Thanks

I think it might be related with the Project framework version. In project properties, try changing the framework version (the the one matching Silverlight SDK).