If you find that you click any item in MAX and you get no response as in adding a part or if you try to update a part and receive an DB Error 4. This could be cause by SQL Server CLR not being enabled. Check your SQL Server or ask your DB admin if CLR has been disabled. In secure locations often DB Admin will opt to not allow CLR due to the fact that CLR can gain access to the network / servers and other critical resources which open the area to attack.