Hello I'd like to announce my starting problem with OSticket v1.9.14We are running a IIS Webserver 8, PHP 7 and MySQL 5.5, I followed the installation guide at http://osticket.com/wiki/Installation.I confidentialy done the prequesits, testetd the php functionality by runing a 'hello world' statement in different subfolders including ../setup/ butwhen it comes to ../setup/index.php (or install.php) i only get Fatal error: Cannot declare class Error, because the name is already in

use in \include\class.error.php on line

43The installation script will not start. As I don't know much about php code the line 43 in include.php ends a Class Error extends Exeption.I am not familiar with it and searching the web didnt gave a helpful hint.Any suggestions would be great.