Technical support staff may ask you for a Lumion Error Log file from time to time when working to resolve hardware or a Lumion compatibility issue.

Please follow the instructions below if you have been asked to provide this file.

1. Lumion 8.3 and newer:

1.1: If you can open Lumion:

1.1.1: Click on the Settings button, click on the button Write error log and set it to On and restart Lumion:

1.1.2: Run Lumion and perform the tasks to replicate the issue.

1.1.3: Click on the Settings button followed by the Save copy... button. Enter a file name and press Enter: 

1.1.4: Importers Log file:

If you are also asked to provide an Importers log file then please also include the file Importers.log file, if it exists, in the folder:  C:\Users\YourUserName\AppData\Roaming\Quest3D.

1.1.5: Attach the file(s) to your next reply to us:

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1.2: If Lumion does not open:

1.2.1 Lumion has written entries to the log file:

In some cases, there will be a log file if Lumion was able to open in prior sessions, even though does not open now.

Locate the Error.log file in this folder on your PC:

C:\Users\YourUserName\AppData\Roaming\Quest3D

If the file exists and is larger than 0KB then there could be entries in the log file we need to see.

Attach the file to your next reply to us:

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1.2.2 Lumion has not written entries to the log file:

If Lumion has not been able to open then it's possible there is no Error.log file. Or, there is a file, but it has no entries and its file size is 0Kb.

Just let us know if there is nothing to send, and there is no file, or if it is 0Kb.

2. Lumion 8.0 and older:

Make sure that you close Lumion.

2.1: In C:\Users\YourUserName\AppData\Roaming\Quest3D, open the most recent folder install for your Lumion version.

Example: "Lumion 8.3_(Numbers)":

2.2: Open the WriteErrorLog file with Microsoft Notepad or another text editor.

2.3: Change the "No" to a "Yes" (without quotations) and save the file.

2.4: Run Lumion and perform the tasks to replicate the issue.

2.5: In the folder C:\Users\YourUserName\AppData\Roaming\Quest3D, locate the file error.log. If Windows Explorer does not show file extensions, the file is just called error:

2.6: Attach the file to your next reply to us:

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