I had the problem too after some wild file deletions.
Try this:
Go to "AHeditor\terrains" and try renaming any folder that contains data of the terrains you made.
I believe the only folders that should remain are:
-blank
-groups
-maps
-newterr
Rename any other folder and see what happens.
Also renaming all other .res files than "newterr.res" might help.
Don't blame me if it blows up in your face.
Camo
------------------
Camouflage
XO, Lentolaivue 34
www.muodos.fi/LLv34 Brewster into AH!"The really good pilots use their superior judgement to keep them out of situations
where they might be required to demonstrate their superior skill."