Just a one-liner patch to make srcfile more descriptive when it fails. --Ethan

<pre>
Index: IkiWiki.pm
===================================================================
--- IkiWiki.pm  (revision 3194)
+++ IkiWiki.pm  (working copy)
@@ -247,7 +247,7 @@

        return "$config{srcdir}/$file" if -e "$config{srcdir}/$file";
        return "$config{underlaydir}/$file" if -e "$config{underlaydir}/$file";
-       error("internal error: $file cannot be found");
+       error("internal error: $file cannot be found in $config{srcdir} or $config{underlaydir}");
 } #}}}

 sub readfile ($;$$) { #{{{
</pre>