Using custom assemby in .rdlc report

Question

Hello,

I am using VS 2015. I am getting these compilation errors on every call of a custom assemby in my .rdlc reports (the messages claim the .dll is not found).

In the previous versions of Visual Studio, I had to place a copy of my .dll in the "Common7/IDE/Private Assemblies" directory.

I am doing the same here, but I still get the compilation errors.

Any ideas ?

Thanks