Why Are Disguises Not Working At The Moment, Is It A Plugin That Needs To Be Updated?

Yes, we are waiting for DisguiseCraft to be updated.

:( AWW SNAPS I CANT RP i is constantly changing skins

Yeah please update the server to 1.7.4 and get the 1.7.4 disguisecraft

Bukkit 1.7.4 has not been released yet. Once Bukkit is updated to 1.7.4, we will also have to wait for the developer(s) of DisguiseCraft to update their plugin. These things take quite a bit of time, so we'll have to be patient. :)