ml_notfound problem

Guys,i'm sorry to bother you,but there's a problem with my plugins,when i switch my weapons it says "ml_notfound:tx_kz_wpnspeed 250" instead of "This weapon's maxspeed is 250".I need a solution for this,if anybody could help me in this situation,i would be grateful to him.

Use your plugin's .txt file and put it in cstrike/addons/data/lang hope it helped.