Roughly translated from my localized UI, I get such errors when using the build-in backup utility:
Permission denied while creating „/duplicity-full.20160503T030844Z.vol1.difftar.gpg”.
Anyone was this? It's on an Asus UX32VD, using the internal 24GB SSD as the backup location.
The location I try to back up to:
ls -la /media/gabor/7e5a3dad-e7f9-4db4-ade5-7dac70379c6e/
drwxr-xr-x 3 root root 4096 Apr 29 00:50 .
drwxr-x---+ 3 root root 4096 May 2 20:00 ..
drwxr-xr-x 2 root root 16384 Apr 29 00:50 lost+found