First of all I don't want to complain about NuGet. I love it every day and I have created two packages myself that I want be easy to use for everyone. It should be a matter of just Install-Package PackageName and not much more. I currently have the following packages. Unified Ad Control for Windows Phone Google Analytics for Windows Phone It was last week when I wanted to update the Google Analytics package that I found a problem. When the package was used in a previous version, and I run the update it did a strange thing in the transformation I made before. The transformation I created was transforming the App.xaml file by adding an element to the xaml.