I have just installed Autocad Revit Structure Suite 2013 on my machine, now whilst Autocad2013 starts OK, when i change the workspace to ASD steel or ASD reinforcent and try to start a new project from the ASD - Start ribbon the functions are not recognised i.e. Unknown command ASD_NEWS. Press F1 for help Unknown command ASD_NEWR. Press F1 for help Any help gratefully appreciated