Placing Monster Spawns : To a.k.a busman

Thanks to a.k.a busman for sharing us how to placing the monster spawns ..
I try your file elf_skyA02 , yes i ready succes run my zone and i can login in client and also i can go to map elf_skyA02 with young flem there ..
but when i try your issue how to replace the monster , i got error ..
i try to change 00000 to 04B00 and also get error when running my zone ..
i use file roslaw 2.2.3.2 ...

any idea sir ?
or maybe someone can help thankss

if you use dateditor you got a extrabyte so delete the extrabyte you got :thumbup1:

i already fix that sir overdope ..
i already edit elf_SkyA02m01.dat with monster 15407 ..
open zone and i try to see the monster ..
but when i go , there is no monster 15407 that i mean ..

post here your map.spt from map folder

Looks like your trying to move your chip ? if this is the case make sure you don't add more than one reference to 04B00 meaning if you have it on one map replace it with another npc and put it on another ? does this make sense ? if Ithat's not what your trying to do then disregard