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copied!<p>I fixed a similar problem in my <code>error.jsp</code> page today. This won't be exactly the same as yours, but it might point someone in the right direction if they're having a similar problem. My problem seemed to be coming from two different sources.</p> <p>First, the <code>message</code> exception property wasn't being set in some of the servlets that were throwing exceptions caught by the error page. The servlets were catching and rethrowing exceptions using the <a href="http://download.oracle.com/javaee/5/api/javax/servlet/ServletException.html#ServletException%28java.lang.Throwable%29" rel="nofollow"><code>ServletException(Throwable rootCause)</code></a> constructor.</p> <p>Second, in the error page itself, the original author had used scriptlet code to parse the message using <code>String.split(message, ";");</code> Since the message was <code>null</code> this failed. I was getting a <code>NullPointerException</code> in my error log, along with the message "Problem occurred while serving the error page."</p> <p>These two things combined to give me a blank page at the URL of the servlet that was throwing the original exception. I fixed my problem by providing my own error message when I rethrow exceptions in my servlets using the <a href="http://download.oracle.com/javaee/5/api/javax/servlet/ServletException.html#ServletException%28java.lang.String,%20java.lang.Throwable%29" rel="nofollow"><code>ServletException(String message, Throwable rootCause)</code></a> constructor, so the error message will no longer be <code>null</code>. I also rewrote the <code>error.jsp</code> page using EL instead of scriptlet code, but that wasn't strictly necessary.</p>

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