Second Life - How to Set Up Reflection Probes for PBR 

Reflection probes are a critical part of the PBR (Physically Based Rendering) Pipeline in Second Life. Without them, your scenes and objects can look washed out or incorrect in various ways. This video demonstrates a general process of setting up reflection probes within an example scene.
The viewer used is Alchemy Viewer, it's similar to Linden Lab's viewer, with some tweaks, but the general workflow should be similar.