Converting your translation project from DMK v3.8 to DMK XP v4.9.1 should be easy with these few steps.
(EDIT King Kadelfek

- use DMK 3.8 with your 3.8 dialogues.txt file to put your partial translation into the game (Steps 3, 4)
- delete DMK 3.8 and all its files (DMK folder, DreaMaker.ini, languages.txt, etc)
- install DMK XP 4.9.1
- extract a new dialogues.txt file from the game with DMK XP v4.9.1 (Steps 1, 2)
Please add all your questions and problems in this thread.
EDIT King Kadelfek :
DreaMaker XP v4.9.1http://www.mediafire.com/download.php?zr7avi8j9wvdrvzYou should delete all DMK 3.8 files before you install DMK XP 4.9.1 : DMK folder,
DreaMaker.ini, etc...