I just purchased myself. I was able to make it past this step. But layout is bad. Have you tried to add the orginal config file then start from scratch? That is what I did. If you want send me your email maybe we can help each other while we wait for a response.
So I’ve sent Huvaidya an email with some updated files. Please PM me your email address, Randy, or fire an email to me at info@rede.ca and I will send you the latest working versions of osTicket Awesome for both 1.9.12 and 1.10-RC2 (which I highly recommend!)