the prerequisites for Qchecker are
CATIA P2 platform:
• at least EI2 + MD2 + PM2 + SA2 configuration
These are the minimum configurations that should be installed, they do not have to be licensed.
PM2 - CATIA - Prismatic Machinist 2 Configuration
is installed in my installation but that is an everything install so I cannot specifically confirm the installation of that particular configuration on its own.