--- /dev/null
+#from skeleton import skeleton
+#extends skeleton
+
+#def title
+ERROR!
+#end def
+
+#def body
+<h1>ERROR</h1>
+
+<p>$errorMessage in operation $op. This shouldn't happen! Please
+email sipb-xen@mit.edu to explain how it happened. Stderr:</p>
+<pre>$stderr</pre>
+#end def