plugin « Error « JSP-Servlet Q&A

1. Eclipse - servlet creation error

I am getting the following error when I try to use the Eclipse IDE wizard to create a Servlet:

"java.lang.Eror: Unresolved compilation problems:
   The import org.eclipse.jst.j2ee.internal.common cannot be resolved.

2. jsp:plugin error

Could someone please point out the error in the code below? I'm trying to work through some of the examples in the book: JavaServer Pages for Dummies. Im trying to use the jsp :p lugin tag (see the code below) and am getting the following error: org.apache.jasper.JasperException: /dynamic/HelloWorld.jsp(10,1) jsp :p lugin not closed