It's normal, as you don't have to turn on error reporting in a production site, for security !

Look at this post: www.joomlic.com/forum/icagenda-announcem...ts-for-icagenda1-2-x

In a next release (1.2.6) most of this notice will be solved.

But don't worry about "notice", this is actually no error, just notification for developers or administrators.

In live sites PHP notices/warnings/errors should never be shown (there's configuration option in PHP) so if your server is properly configured, the notice can be safely ignored as it can only be found from logs. If this message is showing up for every visitor, you really need to learn how to secure your site.

Ok,

The problem is Gavick templates (an other person have the same problem with a gavick templates)

In my opinion, a template should never override joomla configuration.
But Gavick do with error reporting...

Can you try to see on Gavick support, the way to turn off, or not override error reporting of joomla core ?

I've found a lot of people have the same problem, and not only with iCagenda...

So, you can maybe try this, and add the line in your index.php of your template...

www.gavick.com/forums/security-and-confi...&hilit=notice#p92078

Thanks for your test !

I've added it to : www.joomlic.com/forum/icagenda-announcem...nd-your-template#869