Delete the Lumion folder in C:\Program Files and the one in Documents\Lumion .
Sometimes the "load routine" fails because Windows is preventing Lumion from accessing necessary system folders or registry keys due to restricted permissions. Delete the Lumion folder in C:\Program Files and
If you are trying to launch Lumion and are met with the error message you’ve hit a common snag usually related to how the software was installed or how it’s communicating with your license server. delete those lines
If you find any, delete those lines, save the file, and restart Lumion. 6. The "Nuclear" Option: Clean Reinstall save the file