I am having the same issue, only I am trying to use 1 witness server for 2 mirrored databases that reside on different servers. For example, I have db1 on...

Fix unspecified error (MS Visual Database Tool) in Microsoft SQL Server Management Studio

Is common situation when a developer in the process of migration from MS SQL Server 2005 to 2008...

Having the same issue with SQL Server 2008. Only this happens on rdp sessions.

There is another thread on this site where others have found that its a SP2 reinstall or something to that effect. http://www.sqlservercentral.com/Forums/Topic353013-146-1.aspx

I am having similar issues, only...