[eluser]jedd[/eluser]
[quote author="CloppiWeb" date="1275839384"]
So, my problem. I'v defined in config.php file the sub class prefix to "
As_". In library folder I have file called
As_session.php which contains declaration class
As_session extends CI_Session.
[/quote]
It is likely (but not guaranteed) related to a case sensitivity issue (or lack of) on one of your platforms, that is hiding the weird mixed-case nature of your prefix. This is touched upon within the [url="/wiki/FAQ"]FAQ[/url], though your specific variant of the problem is not.
You've said that you have a library file called
As_session.php whereas the file should be
As_Session.php - as per the [url="/user_guide/general/core_classes.html"]User Guide section on Core Classes[/url] - specifically the section 'Extending Core Classes'.
I'm guessing that you've moved onto a Real Operating System in your production environment, and that your MAMP system is running on a case-insensitive file system.