Error Message: FEHLER: Signal 15 wurde zum Script gesendet!

You can try the version from github there is a improvement for a other host in. https://github.com/inpsyde/backwpup

This worked for me, thanks.

I had the following error:

[30-Jun-2015 06:40:59] 1. Trying to create backup archive …
[30-Jun-2015 06:40:59] Compressing files as TarGz. Please be patient, this may take a moment.
[30-Jun-2015 06:41:00] Backup archive created.
[30-Jun-2015 06:41:00] Archive size is 530.96 kB.
[30-Jun-2015 06:41:00] 8 Files with 226.00 B in Archive.
[30-Jun-2015 06:41:00] 1. Trying to send backup file to S3 Service …
[30-Jun-2015 06:41:01] Connected to S3 Bucket "wordpress-backups" in eu-west-1
[30-Jun-2015 06:41:01] Checking for not aborted multipart Uploads …
[30-Jun-2015 06:41:01] Starting upload to S3 Service …
[30-Jun-2015 06:41:01] ERROR: Signal 15 is sent to script!
[30-Jun-2015 06:41:01] Restart will be executed now.
[30-Jun-2015 06:41:03] 2. Trying to send backup file to S3 Service …
[30-Jun-2015 06:41:03] Connected to S3 Bucket "wordpress-backups" in eu-west-1
[30-Jun-2015 06:41:03] Checking for not aborted multipart Uploads …
[30-Jun-2015 06:41:03] Starting upload to S3 Service …
[30-Jun-2015 06:41:04] Backup transferred to https://s3-eu-west-1.amazonaws.com/wordpress-backups/my-db-backwpup_8f4690_2015063006-4059.tar.gz.
[30-Jun-2015 06:41:04] ERROR: Job has ended with errors in 5 seconds. You must resolve the errors for correct execution.

can you try the lastes version from github? We have made a fix that can help on this Error.