HTTP 500 Status - mailSender

Hello,

I have a YAWLStudy 2.0.1 on my Windows 7. It works good. But the mailSender-App causes a HTTP 500 Status, when I try to use it over http: http://localhost:8080/mailSender/WebMail.jsp. I don't know where the problem is. I'am a newbie with YAWL, JSP and Tomcat.

Please help me.

Here is the error report from the apache tomcat server:

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.yawlfoundation.yawl.util.CharsetFilter.doFilter(CharsetFilter.java:34)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
Apache Tomcat/6.0.18