I have an error message that occurs every time I use SQL Server 2012 Management Studio to open or create a new database diagram, followed by an automatic restart of SSMS.
The error message is
Attempted to read or write protected memory. This is often an
indication that other memory is corrupt.
(Microsoft.VisualStudio.OLE.Interop)
Here’s what I did to produce this problem:
Earlier, I had installed SQL Server 2008: via an option available when I downloaded Visual Basic Express 2010. No errors yet. I could create and edit database diagrams without problems. Then I uninstalled VB Express 2010, and installed Visual Studio 2012, only to find out that it was a trial version, which I didn’t like, so I uninstalled Visual Studio 2012. I launched SSMS 2008 and tried to open a database diagram in one of my databases. I received an error that said
Specified Module cannot be Found. (MS Visual Database Tools)
I installed SQL Server 2012 with Management Studio, and then used the SSMS 2012 to try opening the database diagram. And instead of Specified module error, I got the error about attempting to read or write protected memory.
I am running Windows 7, SQL Server 2012 Express and I didn’t uninstall SQL Sever 2008 Express (yet), Visual C# 2010 Express, Visual Basic 2010 Express.
EDIT: I attempted to fix this problem by applying a hotfix named SQLServer2012_RTM_CU1_kb2679368_11_0_2316_x64. It did not fix the problem. The hotfix was suggested by a user in an MSDN forum at this link: http://social.msdn.microsoft.com/Forums/en/sqlexpress/thread/1753d7ba-f6ec-4a8e-a1c9-ded2a5b7c607
I figured out the answer, thanks to another post located here. Basically, even though my visual studio 2012 install was the trial version, it seemed to cause the same problem as the visual studio described in the link. Check it for a workaround.