TOPIC: Events with fatal error

Hi,
I set up all my events with no problem and after go back and open each i have a this message: " Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 27 bytes) in /home/chrismac/public_html/administrator/components/com_dtregister/models/user.php on line 441"
No idea what's mean! Any help applicative! Thanks

Yes, the error tells you the problem. Go to your php settings and increase memory_limit. There's no magic number that this needs to be... depends on the rest of your site setup, server config, etc. Just increase it and you'll make your error go away. Contact your host if you need more help with this.