Snapshot Will Not Generate Backups

I currently am running Snapshot on a development site on a VPS with 1G of RAM - and the site is WP Multisite with Buddypress. I'm having an issue both with scheduled backups and manual backups.

Currently I have a weekly backup set to run on June 17th however my server shows it's June 22nd and there's no archive files.

Additionally I generated a manual backup however when I click "run now" all that happens is that my page refreshes and it says backup will run, but nothing happens.

On a production site of mine (stock WP) Snapshot is working fine however.

On the Dev system I have the memory limit at 64M in WP config but I bumped it to 256M without any success in the Snapshot settings.

Any assistance is very much appreciated.