Urbackup Backup keeps failing

I have a Ubuntu Server 14.04 with Urbackup install. The computers have not been getting backed up.

This is the same on both windows and Linux clients.

Here is the log;

15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 WARNING Error opening temporary file. Retrying…
15.06.15 14:35 ERROR Error creating temporary file in BackupServerGet::getClientSettings
15.06.15 14:35 ERROR Getting client settings failed -2

Depending on the temporary files setting it cannot create a temporary file in TMPDIR (/tmp) or in urbackup_tmp_files on the backup storage. Reasons for that: