Java Programming

I have inherited a web application and need to duplicate it on another server. To make a long story short I set up the application in Tomcat, recreated the database, etc. However, I get the following error message in the browser when I try to access the new URL and in the Tomcat log file. I have no idea what this means. I can decipher that the value for "loginPage" is not being accessed by the java class file. But I don't know why.

I will say that I am using Java 6 and Tomcat 6 while the application was built on much older versions of Java and Tomcat (circa 2002). Some post on the net said that I should update the tag libraries. I don't know how to do that.

Thanks for your help.

java.util.MissingResourceException: Can't find resource for bundle java.util.PropertyResourceBundle, key loginPage
java.util.ResourceBundle.getObject(Unknown Source)
java.util.ResourceBundle.getString(Unknown Source)
org.ncee.journal.LoginBean.<clinit>(LoginBean.java:139)
org.apache.jsp.login_jsp._jspService(login_jsp.java:101)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)