Index: openacs-4/packages/xowiki/resources/templates/view-book.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/resources/templates/view-book.tcl,v
diff -u -r1.1.2.1 -r1.1.2.2
--- openacs-4/packages/xowiki/resources/templates/view-book.tcl	26 May 2016 16:00:31 -0000	1.1.2.1
+++ openacs-4/packages/xowiki/resources/templates/view-book.tcl	14 Sep 2016 10:43:00 -0000	1.1.2.2
@@ -3,6 +3,9 @@
 set i     [$page set __last_includelet]
 #$package_id log "--last includelet = $i, class=[$i info class] [$page exists __is_book_page]"
 
+set book_prev_link ""
+set book_next_link ""
+
 # prevent recursive books
 if {$i ne "" && ![$page exists __is_book_page]} {
   set p     [$i position]