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We had SQL Server 2008 r2 project. Then we converted it to SSMS 2012 format. Now I can't open the converted project. I am getting an error

C:\Views.ssmssqlproj : error : Unexpected error encountered. It is recommended that you restart the application as soon as possible.

Error: No such interface supported File: vsee\internal\inc\vscomptr.inl Line number: 259

The older project was using SourceSafe 6. I wonder if it is the reason. SQL Server Management Studio 2012 doesn't support SourceSafe 6 anymore.

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This is an error that is being experienced by a few of us. Please see:… and the Connect bug logged:… If you are experiencing the same you could add your weight to the discussions. – HeXanon May 7 '12 at 11:18

Microsoft has logged this issue:

and has included the fix starting in the following update:

2723749 Cumulative update package 3 for SQL Server 2012

According to Microsoft, this fix should be available in Service packs:

Microsoft SQL Server 2012 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2012 Service Pack RTM hotfix to an installation of SQL Server 2012 Service Pack RTM. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

So, the latest SQL Server 2012 service pack contains the fix, and it worked for me.

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