I found the problem with the Y.
It was this "[PHP] echo date(Y);[/PHP]" code in my CMS content, where the Y not was quoted 'Y'.
I changed it to "[PHP] echo date('Y');[/PHP]" and all went fine now.
The [PHP] is just a replacement tag of the CMS, where you can render PHP code in the system.

All works fine now.
Thanks