JMailAlerts doesn't work (blanc page) after successful instalations

Hello,

After successful installation of JMailAlerts v.2.5.1 just a blanc page appears when trying to open the component in administration panel.
Here goes my system info:
Linux boscustweb2503.eigbox.net 3.2.52 #1 SMP Tue May 20 13:39:02 EDT 2014 x86_64
Database Version 5.5.32-log
Database Collation utf8_general_ci
PHP Version 5.3.13
Web Server Apache/2
WebServer to PHP Interface cgi-fcgi
Joomla! Version Joomla! 2.5.24 Stable [ Ember ] 25-July-2014 13:00 GMT
Joomla! Platform Version Joomla Platform 11.4.0 Stable [ Brian Kernighan ] 03-Jan-2012 00:00 GMT
User Agent Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124 Safari/537.36

Thank you in advance for any help!
brgds
andre