Bounce cards / Indirect lighting not working?

Development Rendering
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1

I’ve set up bounce cards in my scene with a spotlight (static) facing them directly (and away from scene), to give off indirect lighting to my scene. I have had this working in blank projects, and also in my own project in a different map. Furthermore, my scene is receiving sufficient indirect lighting from my Directional Light (so I know indirect lighting is playing a role). But my bounce cards and spotlights aren’t affecting my scene at all. The same values in a different map in same project will give me desirable results, so what gives?

Pic 1: General setup
Pic 2: Spotlight settings
Pic 3: World settings

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91982-screenshot_2.jpg
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2

OK, turns out the problem was that Cast Shadow MUST be on in order for this to work. Unfortunate that the bounce card itself will leave a mark in my scene ;\

Also had a brief issue where the lightmap on my bounce card wasn’t set. Oops. Remember to check your lightmaps they always say.

3

You could get the same problem if you set them as “Actor hidden in game” before calculating the lightmass solution.