How to prevent deleting Vanilla Navmesh ? I just worked on a navmesh and suddenly the navmesh is deleted in the cell window. No info about that I've deleted the navmesh, nothing. I also would like to know, what the different colors(blue, yellow ... lines) mean. And some triangles are "dark green", or Cyan, depends from view. (don't mean, when I select an trinangle then it's also "bright" green, I know). See screenshot. http://i.imgur.com/nYdGtpS.jpg