Index: openacs-4/packages/acs-templating/tcl/apm-callback-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/tcl/apm-callback-procs.tcl,v
diff -u -r1.5 -r1.6
--- openacs-4/packages/acs-templating/tcl/apm-callback-procs.tcl	13 Sep 2009 23:54:42 -0000	1.5
+++ openacs-4/packages/acs-templating/tcl/apm-callback-procs.tcl	17 Oct 2010 21:06:09 -0000	1.6
@@ -61,12 +61,14 @@
                                  -package_id $package_id_templating \
                                  -parameter "XinhaDefaultPlugins" \
                                  -default ""]
-                set del_pos [lsearch $plugins FullScreen]
-                set plugins [lreplace $plugins $del_pos $del_pos]
-                parameter::set_value \
-                    -package_id $package_id_templating \
-                    -parameter "XinhaDefaultPlugins" \
-                    -value $plugins 
+                if { $plugins ne "" } {
+		    set del_pos [lsearch $plugins FullScreen]
+		    set plugins [lreplace $plugins $del_pos $del_pos]
+		    parameter::set_value \
+			-package_id $package_id_templating \
+			-parameter "XinhaDefaultPlugins" \
+			-value $plugins 
+                }
             }
         }
 }