Thanks
It is the " Untitled_09_cok_renkli_kenar_farkli_sert.tgd " file .
Render times are much longer with that file.
So you have to try to optimize it more maybe.
There shouldn't any error messages actually.
I did not use any other object or image map (so far i know).
Do you use an older version of Terragen?
Mine is 3.0.07.0.
(I know this is not the last build but i think the new build is very near so i still did not update it to the last build.)