July 08, 2014, 01:04:44 am
Please clarify which version you are using. The Trial version is a 7 day trial only for commercial testing.
I am not sure what you mean about the walkthrough option not being there.
You make 'walkthroughs' as video animations using the Movie Mode to create clips. You should have access to that Mode from the main window.
You can also use the Theatre Mode to walkthrough the scene. This shows the scene with the current clip effects, but none of the Movie Mode interface. Commercial Pro users can also make special scenes that can be viewed in the Lumion Viewer to explore the scene (walkthrough).