When custom content types are created using Visual Studio where are the deployed definitions located? I have retraced the ones we have developed and removed them from the farm but my site collection still shows it at a valid content type in the library. Attempting to delete it yields error saying it is part of a solution and prevents me from deleting it. So... I want to find where it is and delete it! I was expecting it in the FEATURES folder but it is not there. SharePOint must think it remains somewhere but where?