I've downloaded Revir 2014 recently, and the material and material editor are still not working; nothing comes out when i click the icon (Manage > materials), or Type Props>Edit Assembly>Material... i have no idea why this is happening, and I've uninstalled all other Autodesk software to avoid conflict and have deleted material library 2012 which came with AutoCad2012 but the problem is still not solved... any advice please? thanks .
have you installed all the latest updates?
check this websites for updates.
http://knowledge.autodesk.com/support/revit-products/downloads#?sort=score
or
read this thread.
hope it helps.
here is the link :
http://designreform.net/learning/2012/05/14/revit-2013-component-based-stairs