Ejbc error in Sun One Application Server 7

Hello ranchers,

I'm trying to deploy an ear file to a Sun One Application Server and I'm being shown the following error:

Error while running ejbc
-- Fatal Error from EJB Compiler --
-- Failed to load deployment descriptor for: siwcc
cause: Error parsing tag lib descriptor

I don't understand. Why is the EJB Compiler trying to parse a tag lib descriptor? I have a tld file in the war module of my application but I
can deploy it ok to JBoss. I'm also using JSTL in my war module. Could that be the problem?

Could anyone please help me with this?

Thanks in advance.