Answer:
Please check to see if the design software Punching Shear Reinforcement HDB by HALFEN has been successfully installed and registered on your PC. The best way to test it is to start the design software HDB without using RF‑PUNCH Pro, either from the Windows start menu or from the desktop shortcut.
If the program has started successfully, you can use the interface of RF‑PUNCH Pro to HDB for further processing.