I cant make mods !

I cant make mods because
PhotoShops says something like that:
The file cant be edited because its diffrent...

Ideas ?

you need to convert it from nexon to lith or whatever. go here: http://www.mpgh.net/forum/210-combat...-4-2010-a.html

read the instructions on texture modding. theres tool at the bottom of the thread for modding. Use them and follow the instructions. Also use that thanks button if I helped