[RPC Fault faultString="Send failed" faultCode="Client.Error.MessageSend" faultDetail="Channel.Connect.Failed error NetConnection.Call.Failed: HTTP: Status 404: url: 'http://localhost:8080/WebContent/messagebroker/amf'"]
at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:218]
at mx.rpc::Responder/fault()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\rpc\Responder.as:53]
at mx.rpc::AsyncRequest/fault()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:103]
at mx.messaging::ChannelSet/faultPendingSends()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\messaging\ChannelSet.as:1482]
at mx.messaging::ChannelSet/channelFaultHandler()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\messaging\ChannelSet.as:975]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.messaging::Channel/connectFailed()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\messaging\Channel.as:997]
at mx.messaging.channels::PollingChannel/connectFailed()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\messaging\channels\PollingChannel.as:354]
at mx.messaging.channels::AMFChannel/statusHandler()[E:\dev\3.1.0\frameworks\projects\rpc\src\mx\messaging\channels\AMFChannel.as:390]
Solution:
To resolve, change the serverContextRoot to point to your Project name instead of WebContent folder.
Here how it is done in .flexProperties file created by eclipse
serverContextRoot="/WebContent"
change this to
serverContextRoot="/your project name"
