Navigate to your Lumion installation folder: \Lumion [version]\Various\Redist versions .
A disrupted download or failing hard drive can corrupt the initialization files.
Modern antivirus software often quarantines Lumion files it falsely identifies as threats (false positives). Specifically, it may isolate files responsible for render channels, mistaking them for injectors. When Lumion looks for the channel, it finds nothing. Specifically, it may isolate files responsible for render
Windows Defender or third-party security software blocked the plug-in from reading the local installation folders or opening a local communication port. Step-by-Step Troubleshooting Methods
Go to your Windows Control Panel > Programs and Features . Look for "Microsoft Visual C++ Redistributable" (specifically the 2015-2022 versions). You can try to "Repair" them, or download the latest "All-in-one" installer from Microsoft's website. 5. Host File Cleanup For some older legacy issues
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
For some older legacy issues, users have reported that downloading a newer build of the same version from an official source resolved the error. One user fixed the problem by finding after having trouble with an older build. If you share with third parties
If you are using a trial or a specific network license, your computer’s "hosts" file might be blocking Lumion from connecting to the server it needs to verify the installation channel. Navigate to C:\Windows\System32\drivers\etc . Open the hosts file with Notepad (as Admin). Check for any lines containing "lumion" or "act-3d."
Security software quarantined critical .dll or configuration files.
This is the most common cause for Lumion 10 users (versions 10.0 to 10.3.2). The problem stems from a conflict created by a specific Windows 10 update (the May 2020 Release v2004, also known as 20H1). This update included Microsoft's own version of a software library called onnxruntime.dll . The difficulty is that Lumion 10 has its own version of onnxruntime.dll installed. When Windows updated, the system attempted to load Microsoft's version, which conflicted with the version Lumion expected, causing the program's internal "channels" to fail during the loading process.
