Thanks again for your help. I have installed the latest SignagePlayer on Mavericks and it runs fine. The only problem is that it still prompts me to run as root... I have run the ./install script - I have checked the Sudoers file an my user has been added there with the correct permissions. Also, in LaunchAgents, local.signageplayer.plist has not been created - is there somewhere I can get a copy of this file?