RPM detected another program using port: 515

The following message pops up when I try to start RPM Remote Print Manager®:

	RPM has detected that another program is using this network port: 515.
	Please check your configuration and try again.

RPM Version 2.2 and later checks to see if another program is using port 515. If you receive this message, exit the program that is using port 515 and restart RPM.

If you setup a queue with LPD protocol and another queue with Telnet protocol, do *NOT* use the port 515 on each. If you do, RPM version 2.2 will not launch and will report the port conflict. If this occurs, one of the queue setups must be deleted from the registry. Contact Brooks Internet Software, Inc. for assistance to proceed.