Trouble With Texture Modding

I have photoshopped my own texture mod for the Galil (it's just neon green). I put it back in my iw_11.iwd directory (where i found it) and when I run black ops, it's fine. But when I join a game, it crashes and says "Invalid IWD files refrenced!" an tells me the filepath to my texture. Then crashes.

WHAT DO?

Im assuming you did all the Hex/CRC editing correctly?

@Heartview
I followed you're guys' tutorial step by step.
HELP PLEASEEEE.
It works though in Private Match.