Why is the Download Manager not working? Lumion Support Center August 28, 2018 09:32 Updated Follow Please see this Knowledge Base article. Related articles Why is the Download Manager not working? How do you analyze a Diagnostics Report? Download Lumion and Lumion Pro Why is there only a 'Load LS file' button on the screen when Lumion starts up? How do you resolve errors, crashes and glitches in Lumion?