vCloud 5.1 api step 8: Instantiate from vAppTemplate

Hi!

I am following this tutorial in order to create a virtual from a template in the catalog using a shell script.

http://blogs.vmware.com/vsphere/2012/03/exploring-the-vcloud-rest-api-part-2.html

When executing step 8 of the tutorial I get the following output:

<?xml version="1.0" encoding="UTF-8"?> <Error xmlns="http://www.vmware.com/vcloud/v1.5" minorErrorCode="INTERNAL_SERVER_ERROR" message="Unable to perform this action. Contact your cloud administrator." majorErrorCode="500" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.vmware.com/vcloud/v1.5http://x.x.x.x/api/v1.5/schema/master.xsd"></Error>