BackWPup – blank white page – when clicking on "jobs"

Hello,
i read a lot about the blank white page but nothing has fixed the issue yet.
Running a fresh wordpress installation 3.9.1 with BackWPup 3.1.2
All I get when I click on “jobs” is a blank white page.

I looked for a log file in the Backup folder and the Temp folder but there is none yet.

What could it be?

Here are the infos from the settings page.

—————————————————————-
WordPress-Version 3.9.1
BackWPup-Version 3.1.2 Pro-Version kaufen
PHP-Version 5.4.9
MySQL-Version 5.5.28-log
cURL-Version 7.24.0
cURL-SSL-Version OpenSSL/1.0.0i
WP-Cron URL: http://MY DOMAIN/wp-cron.php
Verbindung zum Server selbst: Response Test O.K.
Temp Verzeichnis: PATH TO MY WORDPRESS INSTALLATION /wordpress/wp-content/uploads/backwpup-f25be7-temp/
Protokoll-Ordner: PATH TO MY WORDPRESS INSTALLATION /wordpress/wp-content/uploads/backwpup/
Server Apache/2.2.22
Betriebssystem Linux
PHP SAPI cgi-fcgi
Aktueller PHP user u264805
Safe Mode Aus
Max. Ausführungszeit 240 Sekunden
Alternative WP Cron Aus
WP Cron abgeschaltet Aus
CHMOD Verzeichnis 0755
Server Zeit 11:27
Webseite Zeit 13:27
Webseite Zeitzone
Webseite Zeitversetzung 2 Stunden
Webseiten Sprache de-DE
MySQL Client Encoding utf8
Webseiten Charset UTF-8
PHP Memory Limit 256M
WordPress-Memory-Limit 40M
Maximales WordPress-Memory-Limit 256M
Speicher in Benutzung 24,00 MB
Geladene PHP Erweiterungen Core, PDO, Phar, Reflection, SPL, SimpleXML, bcmath, bz2, calendar, cgi-fcgi, ctype, curl, date, dba, dom, ereg, exif, fileinfo, filter, ftp, gd, gettext, hash, iconv, imap, json, libxml, mbstring, mcrypt, mhash, mysql, mysqli, mysqlnd, openssl, pcntl, pcre, pdo_mysql, pdo_sqlite, pgsql, posix, session, soap, sqlite3, standard, tokenizer, wddx, xml, xmlreader, xmlwriter, xsl, zip, zlib
—————————————————————-

https://wordpress.org/plugins/backwpup/