when I want to build my app I get an error Error 1 Metadata file 'c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll' could not be opened -- 'File is corrupt.'
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when I want to build my app I get an error Error 1 Metadata file 'c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll' could not be opened -- 'File is corrupt.'