I removed
or die(__("Sorry, you are not allowed to directly access this page.") . "<br />" . __("Please press the back button in your browser."))
from line 11 and was able to proceed a bit to the point of bring up the login page. The install log shows:
[2015-09-12 22:08:38] INSTALL.INFO: Installation Complete. Redirecting to /xibo18alpha/web/login [] {"uid":"d3caa78","method":"POST","route":"/(:step)"}
But I get this error:
Fatal error: Class ‘Xibo\Helper\Config’ not found in C:\wamp\www\xibo18alpha\web\index.php on line 42