The tracking server will throw an exception whenever it encounters a null value in one of the list table columns it tries to access. When the tracking link is clicked in a message you recieve an HTTP Status 500 error.
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
at java.lang.AbstractStringBuilder.replace(AbstractStringBuilder.java:806)
at java.lang.StringBuffer.replace(StringBuffer.java:392)
at coldspark.tracking.actions.ClickAction.perform(ClickAction.java:210)
at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at org.apache.catalina....
Please refer to the text above
