Getting "Unsupported filesystem" when initiating gae backup.

[Jay]

This just started happening all of a sudden. This is a python27 app engine environment. I am trying to backup to a google cloud storage bucket in a different project. I have successfully backed up from this project to the google storage project many times in the past so I know permissions are OK. 

I just started getting this Unsupported filesystem message today.

I thought I would check in here to see if anyone else has seen this issue recently.

[Jay]

Ah, well it turned out it was the old "/gs/..." bucket name thing. I was a bit confused by the documentation. It said something about "older app engine" and I thought the "/gs/..." was no longer required in all cases.