Any new updates on this? I just ran into the exact same issue and checked UE-42880, which is not updated so far.
Is this method using a source built engine still the only workaround to build DLCs…? 
Any new updates on this? I just ran into the exact same issue and checked UE-42880, which is not updated so far.
Is this method using a source built engine still the only workaround to build DLCs…?