Error in Display Application

[dtorcates]

Hey Guys

I Have a error trying dysplay aplication

"ERROR [org.springframework.web.context.ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'avmRemoteService' defined in class path resource [alfresco/remote-services-context.xml]: Invocation of init method failed; nested exception is java.rmi.server.ExportException: Port already in use: 50501; nested exception is:
java.net.BindException: Address already in use"

when run in  the web browser
http://localhost:8080/alfresco/faces/jsp/login.jsp
show me error 404

thanks

[derek]

The application did not start: Port already in use: 50501.  Find out what is holding that port and kill it before starting Alfresco.  Usually, it's because another instance of Alfresco is running; if not, you can change the port numbers used by Alfresco.