Sorry, I don't have the answer, but I am experiencing the same thing. It cannot find my class. I have put in it every WEB-INF subdirectory, in and out of jars. I need help to. when will Jboss get online help.
I used to get occasional blank pages when I was using Jetty; switched to Tomcat and it is still working great.
I use a simpler taglib-uri definition. For example:
and page declarations as:
<%@ taglib uri="clv" prefix="clv" %>
I also include in my WEB-INF/lib directory all jar files that the tld would require. Works well for me.