Well it's odd... amember also has their script encoded in Zend, but when I tried that all I got was a bunch of question marks on the page. @Golden Chang, where do you see Zend Optimizer in PHPinfo? I checked there and I didn't see anything in reference to the Optimizer, just other Zend products. I'm not sure if it's my own ignorance and I'm not seeing it, but either way something isn't working.