IRegister in different assemblies not working

[leandrobattochio]

Given the following configuration:

CompanyMapsterModule belongs to ErgoBackend.Managers.Companies:

I don't want to explicitly keep declaring mapster modules using apply, so I use the Scan method. But if I don't explicitly include the CompanyMapsterModule, it is never applied because the assembly it is contained is never found in the first place:

But it is referenced:

What am I missing here?