Can i have a link to a tutorial how to make a mod era (bfx,kotor,etc) sorry i could find one

you can find a tutorial in the 1.3patches documentations (in the gamedata folder)

I do have to wonder what you mean when you say you "couldn't find one." How hard did you look? Opening up the FAQ/Everything You Need Thread and searching for the word "era" brings up this link to a tutorial as the sixth result: http://www.gametoast.com/forums/viewtop ... 96#p287596