If you have a (legitimate) portable copy and it fails, here are typical fixes:
Proteus comes with two main modules - ISIS (Intelligent Schematic Input System) for schematic capture and simulation, and ARES (Advanced Routing and Editing System) for PCB design. Proteus Portable 8.8
The latest version of Proteus Portable, version 8.8, includes several new features and improvements, including: If you have a (legitimate) portable copy and