[help]spawn item is not model

i use Codex TheLiciaZ Source ,
this problem happen when i drop the this RootCase
http://www.mx7.com/i/52d/TImFvt.png


when i drop rootcase on the map , any map this error it show up

http://www.mx7.com/i/9d2/gIPay9.png

i try to add model file but it not work , what shoude i do . thank you