Snapshot not running on 1 site. Next file send in past.

I've installed Snapshot on multiple blogs, but can't get it to work on this one

http://www.sarahfalugo.com

SnapShot is latest version

DropBox is authenticated.
Site gets traffic

Curiously on Snapshot page Next File Send is well in the past (18th February) which is probably when I first attempted to run the job.

Please advise

Chris