~ java -jar mongoowl.war
2013-09-19 12:29:25.946:INFO:oejs.Server:jetty-8.y.z-SNAPSHOT
2013-09-19 12:29:26.112:INFO:oejw.WebInfConfiguration:Extract jar:file:/Users/rlodina/Test/mongo/mongowl/mongoowl.war!/ to /private/var/folders/j_/xf72rq4n611cn9yyhz8ffmvw0000gn/T/jetty-0.0.0.0-8080-mongoowl.war-_mongoowl-any-/webapp
2013-09-19 12:29:27.389:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/mongoowl,file:/private/var/folders/j_/xf72rq4n611cn9yyhz8ffmvw0000gn/T/jetty-0.0.0.0-8080-mongoowl.war-_mongoowl-any-/webapp/},file:/Users/rlodina/Test/mongo/mongowl/mongoowl.war
2013-09-19 12:29:27.389:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/mongoowl,file:/private/var/folders/j_/xf72rq4n611cn9yyhz8ffmvw0000gn/T/jetty-0.0.0.0-8080-mongoowl.war-_mongoowl-any-/webapp/},file:/Users/rlodina/Test/mongo/mongowl/mongoowl.war
2013-09-19 12:29:27.410:INFO:/mongoowl:Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
2013-09-19 12:29:28.008:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/mongoowl,file:/private/var/folders/j_/xf72rq4n611cn9yyhz8ffmvw0000gn/T/jetty-0.0.0.0-8080-mongoowl.war-_mongoowl-any-/webapp/},file:/Users/rlodina/Test/mongo/mongowl/mongoowl.war
2013-09-19 12:29:28.057:INFO:oejs.AbstractConnector:Started SocketConnector@0.0.0.0:8080

Acces: http://localhost:8080/

HTTP ERROR: 404

Problem accessing /. Reason:

Not Found
Powered by Jetty://

Thank you

The problem is the issue of access URL. I think that access URL is wrong, even though mongoowl started successfully. You must be accessed to http://localhost:8080/mongoowl/, not http://localhost:8080/.

The problem of access URL will be fixed in the next version.