diff --git a/app/resources/plugins/collectionService/js/CollectionService.js b/app/resources/plugins/collectionService/js/CollectionService.js
index dba15f4e7..4dcb51743 100644
--- a/app/resources/plugins/collectionService/js/CollectionService.js
+++ b/app/resources/plugins/collectionService/js/CollectionService.js
@@ -180,6 +180,7 @@ class CollectionService
 
   buildTreeBlocks(child, rootPath)
   {
+     
     if (typeof child.children !== "undefined") {
       let node = {
         name: child.name,
@@ -192,15 +193,23 @@ class CollectionService
       };
 
       for (let i = 0; i < child.children.length; i++) {
-        node.items.push(this.buildTreeBlocks(child.children[i], rootPath));
-        if (node.items[node.items.length - 1].isFolder === false) {
-          this.queueIndexDB({
-            id: this.id,
-            blockId: node.items[node.items.length - 1].id,
-            path: node.items[node.items.length - 1].path,
-          });
-        }
-      } //-- for child.children.length
+           console.log(child.children[i].path.substring(child.children[i].path.indexOf('.')));
+           
+           var ext = child.children[i].path.substring(child.children[i].path.indexOf('.'));
+           //  Empeaches the problematic loading in CM treeview of .md, json, pdf files ( stored bellow collections "block" subfolders ) 
+           if ( ext !='.md' &&   ext!='.json' &&   ext!='.pdf' )   {                     
+     
+                node.items.push(this.buildTreeBlocks(child.children[i], rootPath));
+                if (node.items[node.items.length - 1].isFolder === false) {
+                  this.queueIndexDB({
+                    id: this.id,
+                    blockId: node.items[node.items.length - 1].id,
+                    path: node.items[node.items.length - 1].path,
+                  });
+                }
+            }
+     
+        } //-- for child.children.length
 
       if (this.hasSubFolders(node)) node.hasSubFolders = true;
       return node;
diff --git a/app/scripts/controllers/menu.js b/app/scripts/controllers/menu.js
index 8b13eab3d..3770e15c4 100644
--- a/app/scripts/controllers/menu.js
+++ b/app/scripts/controllers/menu.js
@@ -410,6 +410,7 @@ angular
             gettextCatalog.getString(
                 'You are editing a submodule, so you will save just this submodule ("Save as" works like "Export \
                 module"). Do you want to continue?'
+             
             ),
             function () {
               $scope.doSaveProjectAs(localCallback);
@@ -656,11 +657,11 @@ angular
           }, 250);
         }
       };
-
+      
       $scope.duplicateSelected = function () {
         graph.duplicateSelected();
       };
-
+      
       $scope.removeSelected = function () {
         graph.removeSelected();
       };
@@ -680,6 +681,16 @@ angular
       $scope.showToolBox = function() {
         showToolBox();
       };  
+      
+      $scope.showCollectionManager = function() {
+        showCollectionManager();
+      };  
+
+      /* redundant: patched via $scope - @mgesteiro
+      function removeSelected() {
+        project.removeSelected();  // <- this is justa a wrapper of graph.removeSelected()
+      }
+      */
 
       $scope.fitContent = function () {
         graph.fitContent();
@@ -915,7 +926,7 @@ angular
             newExternalCollections === "" ||
             fs.existsSync(newExternalCollections)
           ) {
-            //-- The file is valida...
+            //-- The file is valid...
             //-- Set it in the profile
             profile.set("externalCollections", newExternalCollections);
 
@@ -1608,6 +1619,9 @@ angular
 
       // -- Show Floating toolbox
       shortcuts.method("showToolBox", $scope.showToolBox);
+      
+      // -- Show colection Manager
+      shortcuts.method("showCollectionManager", $scope.showCollectionManager);
 
       shortcuts.method("back", function () {
         if (graph.isEnabled()) {
@@ -2026,6 +2040,24 @@ angular
           toolbox.dom.addClass('opened');
         }
       }
+      
+      
+      //////////////////////////////////////
+
+       //----------------------------------------------------
+      //-- Callback function for launching CM from Menu
+      //----------------------------------------------------
+      
+      function showCollectionManager() {
+         
+         //// TODO
+          
+          
+               
+      }
+      /////////////////////////////////////////////////////
+      
+      
 
       //-----------------------------------------------------------------
       //-- Callback function for the ToolBox menu. Whenever an option
diff --git a/app/scripts/services/shortcuts.js b/app/scripts/services/shortcuts.js
index 564966269..0ffab5cd4 100644
--- a/app/scripts/services/shortcuts.js
+++ b/app/scripts/services/shortcuts.js
@@ -64,7 +64,11 @@ angular.module('icestudio')
     /* For easy keycode identification: https://keycode.info/ */
 
     var shortcuts = {
-
+               
+      showCollectionManager: {
+        linux: { label: 'Ctrl+M', ctrl: true, key: 77 },
+        mac: { label: '⌘+M', meta: true, key: 77 }
+      },
       showToolBox: {
         linux: { label: 'Ctrl+T', ctrl: true, key: 84 },
         mac: { label: '⌘+T', meta: true, key: 84 }