500 Error when I launch Orca

I have installed Dolphin on my site at www.casualjunction.com. I have been able to install Dolphin and Ray, but I kept geting a 500 error when I try to launch Orca. I have uninstalled and reinstalled the program many times now I get a different error. File inclusion failed. Did you properly edit inc/header.inc.php file ? What am I doing wrong?

first of all check error log in your Cpanel (there you will find answer)

maybe you have permissions for Orca folder 777 - you should change it to 755

Regards

Artur