For the past 4 months I’ve been using Visual Studio 2015 rather then Visual Studio 2013 and yesterday, I hit a bug with SSRS (shows how much I love SSRS).
The bug appeared when it came to deployment
The error was deploying SSRS report
Exception calling “CreateCatalogItem” with “7” argument(s): “The definition of this report is not valid or supported
by this version of Reporting Services. The report definition may have been created with a later version of Reporting