I created a camera animation in 3ds max and exported the camera with Davy's plug in. I imported it into TG and it worked fine, but frames 50 and 213 render totally black, although the GI prepass seems to compute normally. I found that when I set the camera blur from 0.5 to 0 for these frames it renders fine. I attached the file with another terrain for testing purposes (don't care about the crazy displacement offset - it's just to keep the camera above the ground). Maybe some Planetside staff members can have a look at it?