- Invalid System: download ZSSCRUB.ZIP and run ZSSCRUB.EXE with the product key
- System Migrated: download ZSSCRUB.ZIP and run ZSSCRUB.EXE with the product key
- Working directory path not set correctly
- Changing to a different directory
- Understanding how load a DLL
- Understanding how call an executable usinnng Windows API
- Debugging using Windows Message Box
- Protecting Other Pieces of Code
- CRC Errors