How are the templates hosted (only scanning of templates hosted on a VMWare server are supported)? Are you only scanning, or are you including an automatic deployment? When scanning a template, only the server credentials are used (versus a deployment, which will also then use the machine credentials). Necessary server permissions for a deployment include:
Templates are hosted on a couple of ESX servers. Right now, I'm only scanning them, no automatic deployments.
Credentials have all the proper VM permissions over the templates.
At this point, it would be best if you created a case with support so that we can obtain some further details and log files from you. We do currently have a number of 800 series errors documented, as follows: