[eluser]CroNiX[/eluser]
blank pages usually indicate a fatal error, but you have errors suppressed so you aren't seeing them on the screen. I would check the apache error log as well as the php error log to see what's going on.
What version of CI are you using? Do you have the mysqli extension enabled in PHP (not just CI)? If you do a php_info(); do you see an entry for mysqli?
