We've been using a deployment template that does snapshots of our VM's before deploying patches. It has suddenly stopped making the snapshots, but the patch deployment is fine. I'm concerned because should a patch break something, I want to roll back.
Without any further details, it is very difficult to identify the issue. We would urge you to contact Support directly for further assistance with this issue. This will allow us to identify any pertinent details, as well as to collect and analyze further log data.