Modified files failing security integrity checks, which permanently breaks the loading routine. Step-by-Step Solutions to Fix the Error
Go to the official Lumion website and download the latest version of the LiveSync plug-in for your specific modeling software.
A less common but notable variation occurs when the error pops up after Lumion has already launched—specifically when you try to render a reflection or shadow map. If installing on a secondary drive (like a
If installing on a secondary drive (like a D: or E: drive), ensure the drive is formatted to the NTFS file system, as FAT32 drives handle administrative file permissions poorly.
Right-click VC_redist.x64.exe and select , then choose Repair . Reboot your PC before launching Lumion again. Specific Version Fixes Specific Version Fixes Locate onnxruntime
Locate onnxruntime.dll in the 3rd subfolder of your Lumion installation.
If the error appears with standard assets (not custom imported models), your installation is likely corrupt. Lumion 12 or 2023)
Add the entire (usually C:\Program Files\Lumion [Version] ) to the exclusion list. Restart your computer and try launching the software. 3. Clear the Lumion AppData Cache
If you are a 3D artist, architect, or designer using Lumion alongside Revit, SketchUp, or Rhino, you may encounter an explicit loading error in your CAD software's command line or log files:
: Ensure the application is completely shut down using Task Manager (Ctrl+Shift+Esc) if necessary. Access Protection History : Open Windows Security from your taskbar or Start menu. Go to Virus & threat protection > Protection history . Restore the Files :
If you uninstalled an older version of Lumion (e.g., Lumion 11) before installing a newer one (e.g., Lumion 12 or 2023), leftover registry keys can confuse the new installation. The software looks for channels in the old directory path.