Sendmail plugin for pwAdmin (remake)

this is what i get (some help with this would be appreiciated):

type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception

org.apache.jasper.JasperException: Exception in JSP: /addons/Send Mail 2/index.jsp:8986: gri.data = new Octets(hextoByteArray(itemhex));87: }88: 89: if(protocol.DeliveryDB.SysSendMail(roleid, title, content, gri, coins))90: {91: message = "<font color=\"#00cc00\"><b>Mail Send</b></font>";92: }Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:451) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) javax.servlet.http.HttpServlet.service(HttpServlet.java:729)root cause

javax.servlet.ServletException: Could not initialize class com.goldhuman.IO.Protocol.Protocol org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774) org.apache.jsp.addons.Send_0020Mail_00202.index_jsp._jspService(index_jsp.java:415) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) javax.servlet.http.HttpServlet.service(HttpServlet.java:729)root cause

java.lang.NoClassDefFoundError: Could not initialize class com.goldhuman.IO.Protocol.Protocol protocol.DeliveryDB.init(DeliveryDB.java:76) protocol.DeliveryDB.SysSendMail(DeliveryDB.java:84) org.apache.jsp.addons.Send_0020Mail_00202.index_jsp._jspService(index_jsp.java:261) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) javax.servlet.http.HttpServlet.service(HttpServlet.java:729)note The full stack trace of the root cause is available in the Apache Tomcat/5.5.28 logs.

Apache Tomcat/5.5.28