Index: openacs-4/packages/acs-api-browser/www/content-page-view.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-api-browser/www/content-page-view.tcl,v
diff -u -r1.11 -r1.12
--- openacs-4/packages/acs-api-browser/www/content-page-view.tcl	7 Aug 2017 23:47:46 -0000	1.11
+++ openacs-4/packages/acs-api-browser/www/content-page-view.tcl	21 Jan 2018 01:13:57 -0000	1.12
@@ -60,11 +60,13 @@
     } else {
 	set link [subst {<p>Go back to <a href="[ns_quotehtml [ad_conn package_url]]">API Browser</a>.}]
     }
-    ad_return_warning "No such content page" [subst {
-	The file '$path' was not found. Maybe the url contains a typo.
-	$link
-    }]
-    return
+    ad_return_warning \
+        "No such content page" \
+        [subst {
+            The file '$path' was not found. Maybe the url contains a typo.
+            $link
+        }]
+    ad_script_abort
 }
 
 set mime_type [ns_guesstype $path]