Auto Mode Terrain Data Missing

Hi,

I am using Copter 4.4 and cannot use AUTO MODE with terrain data. I have already checked sd card (.dat file is there in the terrain directory and terrain enabled also), but it is not working. I get the message the Terrain Data is Missing and cannot proceed with auto missions
What could be wrong?

Rgs

Following. Ive been reading through these threads for about a year now and can only find MASS amounts of issues with this, suggestions there may be a bug, and essentially all stating no resolution ever found. Especially for those of us that very specifically want to use rangefinder only, at a low preset alt waypoint for an in flight servo action, in auto flight mode. Also just general terrain following would be nice…but not priority. If I can ever find anything I’ll let you know since it appears to be a crickets topic.