Lumion Pro 10.5.1 comes in two parts:
Before beginning, ensure your PC can handle the software. Lumion 10.5 generally requires: How To Install Lumion Pro 10.5.1
Do not just double-click the file. Follow this checklist first: Lumion Pro 10
If you encounter issues during installation or activation, here are some troubleshooting tips: here are some troubleshooting tips: