This is usually due to an error which is being hidden. A few things to check... Most of this is defined in your php.ini file which you can modify to change it globally. You will have to restart apache.
- Check your
error_log
file- On the index.php add
ini_set('error_log', '/path/to/log');
to specify log file
- On the index.php add
- Turn on displaying of errors
display_errors
- On the index.php add
ini_set('display_errors', true);
- On the index.php add
- Echo your way placing
echo __LINE__ . "<br />";
to see how far you get into the script.