This is my answer at: http://stackoverflow.com/questions/31552082/vsix-installer-signaturedescription-could-not-be-created-for-the-signature-algo/ to the question on why some extensions fail to install at RC (Release Candidate) versions of Visual Studio 2015, showing error “SignatureDescription could not be created for the signature algorithm ...

Following up on a note about Visual Studio 2010 crashing at my previous post, this is the XAML that crashes VS2010 when opened up in a Silverlight project: <UserControl x:Class="SilverlightApplication1.MainPage"   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"   ...