diff --git a/core/deck.core.js b/core/deck.core.js
index a8adefe7..b9fee5bc 100644
--- a/core/deck.core.js
+++ b/core/deck.core.js
@@ -394,6 +394,10 @@ that use the API provided by core.
       initSlidesArray(options.selectors.slides);
       // Pre init event for preprocessing hooks
       beforeInitEvent.done = function() {
+        // reInitSlidesArray is meant only for beforeInit
+        methods['reInitSlidesArray'] = function() {
+            alert('Deck.js method "reInitSlidesArray" is meant to be called in the beforeInit phase only.');
+        }
         // re-populate the array of slides
         slides = [];
         initSlidesArray(options.selectors.slides);
@@ -427,6 +431,19 @@ that use the API provided by core.
       }, options.initLockTimeout);
     },
 
+    /*
+    jQuery.deck('reInitSlidesArray')
+    
+    Force a recomputation of the "slides" array. This method is meant
+    to be used by extensions that generate new slides in the
+    beforeInit phase.
+    */
+
+    reInitSlidesArray: function() {
+        slides = [];
+        initSlidesArray(options.selectors.slides);
+    },
+
     /*
     jQuery.deck('go', index)
 
@@ -601,7 +618,12 @@ that use the API provided by core.
       return methods[method].apply(this, args);
     }
     else {
-      return methods.init(method, arg);
+      if (window.defaultDeckCallIsAnError) {
+        alert("'" + method + "' not found (or meant to be a parameter-less init)");
+      }
+      else {
+        return methods.init(method, arg);
+      }
     }
   };