While opening the Tridion UI I am getting this error:
Unable to Initialize TDSE object. Could not load file or assembly 'Tridion.ContentManager.Publishing, Version=6.1.0.996, Culture=neutral, PublicKeyToken=360aac4d3354074b' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) The type initializer for 'Tridion.ContentManager.TypeRegistry' threw an exception.