I am more an end-user of SQL Server 2012. When I right click on a table name and select \"Edit top 200 rows\" menu item. I get this message:
Exception has been
I have also faced the same issue. And I noticed one thing that if you are using SQL database newer then the SQL management studio version, You will received that message. To overcome this issue just install SQL management studio equal or greater then version of database. i.e if you have SQL 2012 then you need to install SQL management studio 2012 or 2014.