I just finished solving a problem with reflection probes causing seams everywhere, only to discover that there are still two areas with a problem. One is shown in the picture below. You can see that middle column of a modular level is not getting the same indirect lighting as the rest of the scene. There are actually two corner pieces making up that improperly lit area, so they are lit the same, they just don't match the scene. Turning indirect lighting down to 0 solves the problem, but is clearly not the desired solution. The strange thing is, being a modular scene, there are several other instances of that exact same mesh set up and only one other seems to have the problem. Everything in the scene is static, and there are no baked lights. So I guess it is a precomputed GI problem. Possibly related to the problem is the fact that anytime lighting needs to get rebaked, I get an error that says "Failed opening GI file." Actually, I get 11 of them. I tried clearing the GI cache in the hopes that it solved that error (and with it the lighting problem) but that didn't do any good. Any ideas would be great. I tried searching and couldn't find an answer. But all I've done for that past two days is search for answers regarding lighting this scene, so it's entirely possible I'm just fatigued and missed something.