The error typically occurs when your antivirus software (including Windows Defender) mistakenly flags and quarantines essential Lumion files (like StringOperator.dll ) during startup. Step 1: Terminate the Lumion Process
Open Windows File Explorer and navigate to your main directory (usually C:\Program Files\Lumion [Your Version] ). Locate and open the subfolder named . Find the file named onnxruntime.dll .
If you noticed any (like a .dll ) mentioned alongside the error. The error typically occurs when your antivirus software
Modified or "free" versions of Lumion often require edits to the Windows hosts file to block internet checks. However, if these entries are formatted incorrectly, Lumion cannot read its local loopback channel, causing the boot routine to skip entirely. Navigate to C:\Windows\System32\drivers\etc .
Software like Windows Defender may falsely identify a required Lumion installation file as a threat and delete or quarantine it, leaving the "channel not found". Find the file named onnxruntime
To prevent the error from recurring, exclude the Lumion installation folder from future scans. Virus & threat protection settings Manage settings Exclusions and select Add or remove exclusions Add an exclusion and select your Lumion installation directory (typically C:\Program Files\Lumion [Version] 3. Fix "onnxruntime.dll" Conflict (Lumion 10 specifically)
If you are trying to run an extremely old free version of Lumion (2.1), ensure you have the latest build from the official website. Users have reported that upgrading from Build 1 to Build 3 resolved the error. Visit the official Lumion website to download the most recent version of the free software they offer. However, if these entries are formatted incorrectly, Lumion
This is the only method that guarantees success. "Skipping load routine free" usually means the installer itself is broken.
Let's address the elephant in the room. A massive number of searches for this error come from users running cracked or patched versions of Lumion.
Disclaimer: This article focuses on troubleshooting valid, licensed installations of Lumion. If you'd like, I can help you: