No Incremental Backups with Restore Failures

I am using Deja-Dup 14.2 on Ubuntu 10.04.

Concerns:

a) DD will not make incremental backups. Whenever a backup is initialized, subsequent to a full backup; DD messages, that it is "cleaning up"; -> removes the backup data; and then signals that it is "creating the first full backup.

b) When the first full backup is completed again; it, about 50% of the time, signals "Backup Finished -> your files were successfully backed up"; OR, in the other 50% of times, DD starts all over with "cleaning up" and removes the backup data; with again signaling, "creating the first full backup; which it starts to do.

c) When a first full backup has supposedly "completed successfully"; if, Restore is run; DD always, shows a message stating "checking for backups -> followed with a subsequent message, "Restore Failed" -> and the backup data again, is deleted.

To Reproduce:

Backups were initialized with directions from Michael Terry as below:

DEJA_DUP_DEBUG=1 deja-dup | tail -n 1000 > /tmp/deja-dup.log1

# Now try to make an incremental backup (which we expect will delete the previous one)
# Note that this line is different than the above one, as we now want the first 1000 lines, not the last 1000
DEJA_DUP_DEBUG=1 deja-dup | head -n 1000 > /tmp/deja-dup.log2

Logs 1 & 2 are shown hopefully. in the attachments.