RPC failure while executing coverage.get

[mangla]

I used -Demma.rt.control.port=$EMMA_PORT while intrumenting because it was giving me address already in use error.

But now while generating the report by using

java emma.jar emma ctl -connect:47653 -command coverage.get,mycoverage.ec \ -command coverage.reset

I get the following error

EMMA: processing control command sequence …
EMMA: executing  …

emma ctl: coverage.get: RPC failure while executing
Exception in thread "main" com.vladium.emma.EMMARuntimeException: coverage.get: RPC failure while executing
        at com.vladium.emma.ctl.CtlProcessor._run(CtlProcessor.java:242)
        at com.vladium.emma.Processor.run(Processor.java:88)
        at com.vladium.emma.ctl.ctlCommand.run(ctlCommand.java:151)
        at emma.main(emma.java:50)
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:381)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:243)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:230)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:377)
        at java.net.Socket.connect(Socket.java:539)
        at java.net.Socket.connect(Socket.java:488)
        at java.net.Socket.<init>(Socket.java:385)
        at java.net.Socket.<init>(Socket.java:228)
        at com.vladium.emma.rt.RTControllerClientProxy.execute(RTControllerClientProxy.java:84)
        at com.vladium.emma.ctl.CtlProcessor._run(CtlProcessor.java:231)
        … 3 more

Can anyone help me to solve this problem?
what could be the reason for this??

Thank You