I'm having this issue as well but I'm not able to change my PHP version (currently at 5.3 though so I meet the requirement).
http://osticket.com/download
The download page states the requirements are:
Web Server: Apache or IIS
PHP Version: 5.3+
MySQL Database: 5.0+
Is anyone else having this installation issue? osTicket Core, v1.8.0.1 is what I'm trying to install. I've erased the entire directory just in case and re-uploaded via FTP (binary) but was not successful getting the installer to run.
Thanks for any help in advance,
--Joel
Joel, I would recommend that you start your own thread and post your server pertinent details and include the error message(s) that you are getting as well as the url that your using (see Please read before requesting assistance)