doesnt look like it can make a connection to the testing server.
in the files panel, change from Local View to Testing Server view, see if that forces the testing server conecton.
in the site settings, how is the testing server deefined?
ate you using an FTP conenction to the testing server?
Make sure the Web URL is set correctly, and double check the root directory, in some instances, you may need to specify /htdocs or another root directory so the connection is made to the site root.