A bug was introduced with the 2.3.0 release and not discovered until recently.
Change the following files to fix.
Linux
/usr/local/open-audit/code_igniter/application/controllers/include_input_discoveries
/usr/local/open-audit/code_igniter/application/helpers/discovery_helper.php
Windows
c:\xampplite\open-audit\code_igniter\application\controllers\include_input_discoveries.php
c:\xampplite\open-audit\code_igniter\application\helpers\discovery_herlper.php
Search for:
if (isset($modules) and is_array($guests) and count($modules) > 0) {
Replace with:
if (isset($modules) and is_array($modules) and count($modules) > 0) {