facelets custom tag problem

[dago]

i'm a newer
i have problems in using facelets custom tag on jboss
as described:
https://facelets.dev.java.net/servlets/ReadMsg?list=users&msgNo=2179
and
http://www.nabble.com/facelets%2C-tomahawk-and-redeploy-on-Jboss-problem-%22object-is-not-an-instance-of-declaring-class%22-tf2061548.html

who can help me?thanks!