I made the update-check. The answer was:
Good, the latest version of EventList is installed. Always check for updates!
After Serverupdate an Error appears in Frontend.
Deprecated: Function ereg() is deprecated in .../components/com_eventlist/views/details/view.html.php on line 166
See the error on the website:
I added at the top of the .htaccess-file following code, but without success. So I removed it again.
AddHandler php4-cgi .php
The Hosting-Service told me, that it is not possible for them to go back to the old settings.
Please, how can I resolv the problem?
Thank you for your help.