Merge pull request mirkokiefer#73 from willwhite/single-errors

Handle single error responses from AWS.

Author: ianshward

lib/aws.js

@@ -118,10 +118,15 @@ var genericAWSClient = function(obj) {
         res.addListener('end', function() {
           var parser = new xml2js.Parser();
           parser.addListener('end', function(result) {
-            if (typeof result != "undefined" && typeof result.Errors != "undefined"){
-              callback(new Error(result.Errors.Error.Message), result)
+            if (typeof result != "undefined") {
+              var err = result.Error || (result.Errors ? result.Errors.Error : null)
+              if (err) {
+                callback(new Error(err.Message), result)
+              } else {
+                callback(null, result)
+              }
             } else {
-              callback(null, result)
+              callback(new Error('Unable to parse XML from AWS.'))
             }
           });
           parser.parseString(data);