Hi Christian,I wonder, could I ask you to look at this thread over at the MSFS Scenery Design Forum, please:http://forums.avsim.net/dcboard.php?az=sho..._id=36375&page=I would be very interested in any comments or suggestions you may feel able to make.Thanks,Mike

FYI one of these March updates fixed this issue. It was an authoring problem of the phototerrain definitions. For some strange reason they are 257x257 "tiles" in size, not 256x256 as a sane person would expect. So their edges contained invalid data.