Could not load file or assembly 'System.Threading, Version=1.0.2856.102?

I'm getting this error, because my application was on .net framework 4.5.1 and it by default have System.Threading file in mscorlib, and Red Gate requires System.Threading with Version=1.0.2856.102, When I manually add it also generates error.

Could not load file or assembly 'System.Threading, Version=1.0.2856.102, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
or one of its dependencies.
 The system cannot find the file specified.


  • Hi @Am27_Centaman,

    Are you referencing the dll's from within the SQL Compare installation folder or from the SQL Comparison SDK installation folder?  Or have you moved dll's to a different folder and not copied those across?  It should be included within the C:\Program Files (x86)\Red Gate\SQL Comparison SDK 12\Assemblies\SQL Compare folder which is where the dll's that you should be referencing are normally located.

    Kind regards,
    Product Support Engineer | Redgate Software

    Have you visited our Help Center?
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