Parse error after installation

Hallo, when i click to Memberships icon in RSMemberships Menü in Joomla admin, than i get this:

Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /homepages/39/d266224865/htdocs/notebookhelp/administrator/components/com_rsmembership/models/memberships.php on line 112


I get no error in installation prozess.

It is correctly set: 755 for /components, 755 for administrator/components, 777 for /media and at least 755 for the configured Joomla tmp folder

Need help please. Thank you



Systeminformation:
PHP erstellt für: Linux infong 2.4 #1 SMP Tue Dec 18 22:34:10 UTC 2007 i686 GNU/Linux
Datenbankversion: 4.0.27-max-log
Datenbanksortierung: N/A (mySQL < 4.1.2)
PHP-Version: 4.4.9
Webserver: Apache
PHP-Anbindung zum Webserver: cgi
Joomla!-Version: Joomla! 1.5.15 Stable [ Wojmamni Ama Mamni ] 05-November-2009 04:00 GMT
Browserkennung: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.2) Gecko/20100115 Firefox/3.6

--------------------------------------------------------------

Safe-Mode: off
Open-basedir: non
Fehler anzeigen: on
Kurze Open-Tags: on
Datei-Uploads: on
Magic-Quotes: on
Register-Globals: on
Ausgabe puffern: off
Session-Speicherpfad: /tmp
Session-Autostart: 0
XML aktiviert: Yes
Zlib aktiviert: Yes
Deaktivierte Funktionen: non
Mbstring aktiviert: Yes
Iconv verfügbar: Yes
WYSIWYG-Editor: Editor - No Editor

Hello,

Please download RSMembership! again from our site and install over your current version. This will act as an update for your current installation.

Hello,
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