HanShi (12/22/2014)
When connected to the proper SQL instance, execute "SELECT @@VERSION" in a (new) query window. The result will show you the edition of SQL Server and also states information about installed service pack.
That shows the server's service pack. Since this is a .net error, it's a client error from management studio. To see if you've patched management studio, Help -> About and look at the version number there and compare it against any of the lists that google can get you on what service pack has what version number.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability