ACS - Stack level too deep

I try to upload an image to ACS.Photos. But I'm getting the message "Failed to upload photo: Stack level too deep"

This is my code:

Ti.App.acs.Users.login({
                login: 'username',
                password: '********'
            }, function (login) {
                if (login.success) {
                    Ti.App.acs.Photos.create({
                        photo: image
                    }, function (e) {
                        alert(e);
                        if (e.success) {
                            var file = e.photos[0];
                            console.log(file);
                            //event.fireEvent('upload.image.success', {
                            //    data: file
                            //});
                        } else {
                            //sendToObject.fireEvent('upload.image.error', {error: e.error});
                        }
                    });
                }
            });