Resolving Port Conflicts
If your application runs with others, you may experience problems related to those other ports conflicting it. For example: the application can have trouble communicating with the built-in TFTP server for backups. Port contention of TFTP on UDP port 69 with other applications can cause this. Try rebooting the system to clear any unused ports and verify that UDP port 69 is not in use before starting the application.
You can use a freeware program called Active Ports to scan the ports on the system and end any processes to clear the necessary ports.