Recently I've been trying to create terrain files for several airports but have been perplexed by a prompt that appears when I press S to save a DE1 and DE2 file. This asked if the Terrain File Size was > 1000. Answering Yes and No didn't solve the problem of terrain files being created that covered too greater an area and were therefore unusable.

I wrote to PM Support via their forum but Enrico couldn't replicate the problem. I was puzzled because occasionally I could successfully generate them.

I was close to giving up when more by luck that anything I discovered the solution. You have to press s and not S.

I'm not sure how many of you use WhazzupPlus for this purpose any longer but it is very useful to have the terrain displayed on the ND.

I hope this helps anyone who wants to generate terrain files.