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When you first open V-Ray Light Gen, you are presented with the following message. Note that to download the content, you need about 1200 MB of free disk space.

The HDR images for IBL are saved in the following locations: \Documents\Chaos Cosmos\Packages\HDRIs

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For versions prior to V-Ray 7, the location is \Documents\V-Ray Material Library\AEC\hdrs

If there is a previous installation of V-Ray 5 for 3ds Max SketchUp detected, the files are saved in the already specified location.

Once the download is complete, the HDR assets remain permanently available.

Every time you start Light Gen, V-Ray connects to the Chaos servers to validate the completeness of the downloaded assets and check for updates. If a connection cannot be established, you can choose to proceed using what is already available on your hard drive.

Note that you can change the directory and disable the automatic check for updates from the Configuration rollout.

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  • The V-Ray Material Library and Light Gen HDRI assets may be inaccessible for direct download to V-Ray 5 users. This can be avoided by upgrading to the latest version of V-Ray 6.
    Alternatively, the asset files can be acquired manually by downloading the followingarchive fileand unpacking it at: %USERPROFILE%\Documents\
    Restarting V-Ray after the asset files are placed will restore functionality to both the Material Library and the Light Gen. Note that a message prompting you to download assets may still appear - press Continue to safely disregard it.

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