diff --git a/lib/cartodb/cartodb_windshaft.js b/lib/cartodb/cartodb_windshaft.js
index e4536a82..86854861 100644
--- a/lib/cartodb/cartodb_windshaft.js
+++ b/lib/cartodb/cartodb_windshaft.js
@@ -37,7 +37,8 @@ var CartodbWindshaft = function(serverOptions) {
             },
             function(err, data){
                 if (err){
-                    res.send({error: err.message}, 500);
+                    ws.sendError(res, {error: err.message}, 500, 'GET INFOWINDOW');
+                    //res.send({error: err.message}, 500);
                 } else {
                     res.send({infowindow: data}, 200);
                 }
@@ -57,7 +58,8 @@ var CartodbWindshaft = function(serverOptions) {
             },
             function(err, data){
                 if (err){
-                    res.send(err.message, 500);
+                    ws.sendError(res, {error: err.message}, 500, 'GET MAP_METADATA');
+                    //res.send(err.message, 500);
                 } else {
                     res.send({map_metadata: data}, 200);
                 }
@@ -77,7 +79,8 @@ var CartodbWindshaft = function(serverOptions) {
             },
             function(err, data){
                 if (err){
-                    res.send(500);
+                    ws.sendError(res, {error: err.message}, 500, 'DELETE CACHE');
+                    //res.send(500);
                 } else {
                     res.send({status: 'ok'}, 200);
                 }
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 5862215f..d49f6031 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -3,7 +3,7 @@
   "version": "1.1.0",
   "dependencies": {
     "cluster2": {
-      "version": "0.3.5-cdb01",
+      "version": "0.3.5-cdb02",
       "from": "git://github.com/CartoDB/cluster2.git#cdb_production",
       "dependencies": {
         "express": {
@@ -245,7 +245,7 @@
       }
     },
     "windshaft": {
-      "version": "0.6.1",
+      "version": "0.6.2",
       "dependencies": {
         "express": {
           "version": "2.5.11",
@@ -273,7 +273,7 @@
           "version": "4.3.1",
           "dependencies": {
             "optimist": {
-              "version": "0.3.4",
+              "version": "0.3.5",
               "dependencies": {
                 "wordwrap": {
                   "version": "0.0.2"
diff --git a/package.json b/package.json
index ebceadeb..c9cd7025 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
         "node-varnish": "0.1.1",
         "underscore"  : "~1.3.3",
         "grainstore"  : "~0.9.1",
-        "windshaft"  : "~0.6.1",
+        "windshaft"  : "~0.6.2",
         "step": "0.0.x",
         "generic-pool": "1.0.x",
         "redis": "0.7.2",