LoadMobProto Error

[SkScreenS]

Hi all, as the title i have a bug in the client that occurs when i modifify .txt files to convert.
In short words, one time modified names of mobs and crypted all (mob_proto, and locale) the client it blocks at loading in the world (wich instead the mouse puntator there're exp percents).

In the syserr it appear ALWAYS at ever modify of mob_proto this:

0613 16:55:22901 :: CPythonNonPlayer::LoadNonPlayerData: invalid size 373320 check data format.
0613 16:55:22902 :: LoadLocaleData - LoadMobProto(locale/it/mob_proto) Error

P.S.: This happens ONLY with mob_proto. With item_proto it works.
P.P.S.: I can't decrypt mob_proto (clientside) because decrypter it says this:

NonPlayer::LoadNonPlayerData<> failed - invalid size %u check data format

up pls it's important

upppp