Update of .gitignore

 bower_components/
-nodes_modules/
+node_modules/
+!deps/{pose,surf,three.js}/
 *~
 

@@ -352,16 +352,18 @@ ARCS.Context = function( ctx ) {
         var p, promises=[];
         
         for (p in components) {
-            if (components.hasOwnProperty(p)) {
+           if (components.hasOwnProperty(p)) {
                 if (factories[components[p].type] === undefined) {
                     console.error("[ARCS] Factory " + components[p].type + " not found.");
                     console.error("[ARCS] Context dump follows: ", libraries, components, constants);
                     return ;
                 }                    
                 factory = factories[components[p].type];
-                
+                try {
                 if (components[p].value !== undefined || components[p].url !== undefined || components[p].ref !== undefined) {                
                     if (components[p].value !== undefined) {
+                        console.log("instanciating ", p);
+                        
                         components[p].instance = new factory(components[p].value);
                     }
                     if (components[p].url !== undefined) {
@@ -379,6 +381,7 @@ ARCS.Context = function( ctx ) {
                 } else {
                     components[p].instance = new factory();
                 }
+                } catch(e) { console.error("[ARCS] Component of type ", p, " not instanciated.", e);}
             }
         }        
         return Promise.all(promises);
@@ -2296,7 +2299,7 @@ arcs_module = function(moduleDefinition, deps) {
                 // shim performed
                 require([dep], 
                         function(d) { resolve(d); },
-                        function(err) { reject(dep, err); }
+                        function(err) { console.log("[ARCS] Trouble with module ", dep); reject(dep, err); }
                 );
             }
         });