Are you using Visual Studio 2013 ? on 20th January 2014 Microsoft released an update for the Visual studio 2013. This update includes all the updates including fixes and additional features.
Changes
Included Nuget 2.7.2
IntelliTrace Viewer will supports Internet Explorer 9 Now.
Fix for Cloud Platform - "Object reference not set to an instance of an object" error message when an external user tries to save any intrinsic entity data from an Office 365-based cloud business application.
and many more…
Download the update from http://www.microsoft.com/library/errorpages/smarterror.aspx
Support - Windows 7 Service Pack 1, Windows 8, Windows 8.1, Windows Server 2008 R2 SP1, Windows Server 2012
The download size is just 1.1 Mb while installing the installer will download more files. For me the download size is around 340MB.
You can read more about this update here on the Knowledge Base article – link
