问题:vs2013在装了

未找到与约束  	ContractName	Microsoft.VisualStudio.Text.ITextBufferFactoryService 	RequiredTypeIdentity	Microsoft.VisualStudio.Text.ITextBufferFactoryService

之后,重启,打开VS提示:

未找到与约束
ContractName Microsoft.VisualStudio.Text.ITextBufferFactoryService
RequiredTypeIdentity Microsoft.VisualStudio.Text.ITextBufferFactoryService

解决:参考

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