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Microsoft SQL Server Management Studio
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Expected 1 export(s) with contract name "Microsoft.VisualStudio.Text.Editor.ITextEditorFactoryService" but found 0 after applying applicable constraints.
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OK
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解决办法
delete or rename the ComponentModelCache folder
%AppData%\..\Local\Microsoft\VisualStudio\13.0\”
%AppData%\..\Local\Microsoft\SQL Server Management Studio\13.0\