Claims that SE Bloom isn't working might be overstated. I'm sure there are some cases where it is not working properly, but Unity has been changing a lot of things in the last year, and they've introduced a few bugs on their end. Two of the bugs related to SE Bloom in posts above are actually Unity bugs that ought to affect all bloom plugins. Another update to Unity is due in about a week (5.4). Possibly some of the Unity bugs that affect SE Bloom (and other bloom plugins) will be fixed. As noted above, in relation to a performance bug in a recent Unity version on OSX: And as noted in comment #340, there are Unity lightmap errors that can show up with any bloom effect, and you can fix them by adjusting the SE shader (as shown above).