Instead of using a high-risk repack, consider the following official options for accessing SAP2000:

: SAP2000 automatically checks designs against international codes, such as ASCE (USA) , Eurocodes , and IS codes (India) , for materials like steel, concrete, and aluminum. Applications and Industry Use SAP2000 Features | STRUCTURAL ANALYSIS AND DESIGN

Version 15.2.1 addressed several stability issues from previous v15 releases, providing a more reliable environment for large-scale simulations. System Requirements for Legacy Versions