This is all on MacOSX. I don't know if it applies to Windows. Once I add displacement to an infinite shader, it converts to being a regular plane. I mean, it's still labelled as an infinite plane, it just isn't. And backing up the steps that led there won't restore it to infinity - only restoring the file. But I can add bump maps to infinite planes, no problems (moving forward or backward in time). Has anyone found a way around the displacement issue? It puzzles me that bump maps work, but displacement maps don't...maybe I missed something?