Problem with this version

[KheireddineAzzez]

Error: BadRequestAn error occurred when parsing the HTTP request POST at '/'/3795b201-44ae-4429-b3a8-6b5fbf98db90

My code:

```Slingshot.createDirective("myFileUploads", Slingshot.S3Storage, {
		bucket: "dev",
		acl: "public-read",
		storageClass: 'REDUCED_REDUNDANCY',

		AWSAccessKeyId: "dwO0cf1o8ooSIFo3",
		AWSSecretAccessKey: "kbjlv2YZiOZYBdChn9v18cxXGcGmv7Zg",
		bucketUrl:"http://127.0.0.1:9000",
		authorize: function () {
			//Deny uploads if user is not logged in.
			if (!this.userId) {
				var message = "Please login before posting files";
				throw new Meteor.Error("Login Required", message);

			}

			return true;
		},

		key: function (file) {
			//Store file into a directory by the user's username.
			var user = Meteor.users.findOne(this.userId);
			return user.username + "/" + file.name;
		}
	});