Surpac 6.12 is an outdated version. Modern versions have been "substantially rejigged" by parent company Dassault Systèmes, meaning experience gained on 6.12 may not translate well to current industry standards. Instability:
: You lose access to critical security patches and feature updates provided by the official vendor.
I encourage exploring legitimate options for accessing Surpac or similar software to ensure you're able to utilize the tools safely and effectively.