The SDK requires an internal port for access to the RMI registry, which defaults to port 1099. If another application is already using that port, a conflict arises that might cause the SDK or the application using the port to freeze or might prevent the SDK from inter-operating with other tools. This conflict rarely occurs and when it does, a message with instructions opens when the SDK starts.
If this conflict occurs, you may want to resolve it by rebooting the computer. If this conflict happens frequently, you can change the internal RMI registry port number.
To change the RMI registry port:
Find out which ports are not in use:
In the main window of the SDK, select Tools > Preferences and click the Networking tab.
Enter a port number that is not being used for the Internal RMI registry port.
Reboot the computer for the change to take effect.
If you do not reboot, currently running SDK instances will use the old port number and newly launched SDK instances will use the new port number. The currently running and the new SDK instances will not work together.