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Could not load file or assembly ‘System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ or one of its dependencies. The module was expected to contain an assembly manifest.
This error is caused by an missing file (which is part of the .Net Framework) on your computer.
It most likely happened durung the un-installation of another program, which has incorrecltly removed the file.
Microsoft have a tool which should be able to repair your installed version of the .Net Framework.
This can be downloaded from https://www.microsoft.com/en-gb/download/confirmation.aspx?id=30135