In general the first step when dealing with this sort of error would be to turn on error reporting by putting the following at the beginning of your index.php:
ini_set('display_errors','On');
error_reporting(E_ALL);
Doing so might give you some php specific error message with which you will find it easier to troubleshoot the problem.
ini_set('display_errors','On');
error_reporting(E_ALL);
Doing so might give you some php specific error message with which you will find it easier to troubleshoot the problem.
