After a very helpful and lengthy discussion on live chat with Kris Tomczyk yesterday, although we were unable to resolve this issue. I have yet to be able to create a successful backup of any of my sites using Snapshot Pro. TARANDFEATHER.TV is one that continuously fails at 92% when it gets to the "plugins" directory. We tried a number of things, outputting logs, disabling all plugins, etc. all to no avail and no pinpoint problem in the logs. Kris also tried doing it locally, which also failed so we eliminated Google Drive as being the issue. On HALFSTOP.TV, I am able to "successfully" initiate a backup, although it never completes the upload process, just continuously for over 24 hours says "uploading" in the status with a spinning wheel, and nothing shows up in the destination folder on Google Drive (which is fully authenticated and checked out via API Key, etc.). Basically, I need to get the functioning properly on all 3 of my sites linked to WPMUDEV.