System.IO.FileLoadException I do not know the assembly name it refers to

I get this error when running code that invokes a method from another application: System.IO.FileLoadException: Could not load file or assembly '{4db3e11c-3668-40ab-aadc-02b4f26d6f10}, PublicKeyToken=3e56350693f7355e' or one of its dependencies. A strongly-named assembly is required. (Exception from HRESULT: 0x80131044)

I understand the idea of the assembly needing to be strongly named, but how do I figure out what {4db3e11c-3668-40ab-aadc-02b4f26d6f10} is? I do not recognize it.

Or am I asking the wrong question?