Snapshot now backing up my sites :(

Part of my decision as to whether I continue with this membership or itheme is the staging functionality. iThemes is really buggy, but when it works, it works well and easily. (probably because I've spent so many hours with support troubleshooting, I know the steps when I get stuck....)

At any rate, my issue is this. My staging site (gella.secondnaturebeauty.com/dev) and my live site franciscogelladance.com will not backup with this service. The backend just blows up and won't do anything everytime I try to create a snapshot and press the "backup now option."

Any idea what's happening?