1. Here's what it means
The error message 'Your License Key is invalid' is caused by one of the following:
1.1: Overzealous security software might be preventing Lumion from accessing the license server. Please follow the instructions in step 1.1-1.4 in the article below:
- Knowledge Base: How do you resolve anti-virus and firewall problems?
1.2: In rare cases, it could mean that your License Key may have been disabled by us or by a Lumion partner. Please send the file and information below to us so we can test your License Key:
- Support & Learning: Contact Us (Click on 'Technical Support')
- The 'hosts' file from C:\Windows\System32\drivers\etc\
- The name of the computer.