can someone help me with two problems i'm getting custom npc and custom items please this is what what iv'e done and the problems accruing, the npc problem i'm getting when i load the client it loads half way then goes into a error saying i'm missing a bunch of sprites, item problem the client loads soon as i spawn the item the client crashes, the files i edited and updated are below i try not too ask but iv'e been trying too figure this out for a few days now

iv'e edited the files
server side
npcDef
itemDef

iv'e edited these files
client side
npcdef
itemdef
sprites