Error during loading my plugin in Revit 2017 after Ofuscator use

Dear Jeremy,

First of all, thanks a lot your great help in this forum.

Please, let me expose to you my actual problem.

I created a plugin for Revit 2017 in C# with visual studio 2015.

After building the project in VS, and launching it in Revit, everything is OK.

BUT, when I try to use the DotOfuscator of Visual Studio to ofuscate my Dll Library project and loading it in Revit, I get the following error (see attached file).

I notice that I use basic ofuscator method (without signing).

Is it mandatory to sign my dll before trying to load it in revit, knowing I use RevitAPI(2016) and RevitAPIUI(2016) x64 signed by autodesk in sha1 ?

Is it mandatory to sign my dll to use correctly your API's during loading time in Revit ?

I tried, others ofuscators software but I get the same error.

Thanks a lot for your help.

Regards,

Albert