Auto login RDP problem

I am testing PMP 6.9 on Linux, I added a Windows server with agent installed to the resource.

When I try to RDP through PMP with the latest Firefox/Chrome, it showed "Please wait while connecting..." in new browser tab and closed the tab automatically.

I did opened "Troubleshoot AutoLogon issues" link to accept the self-signed cert already, still the same.
Also the same even I switched off the Windows firewall of the managed computer.

I did it successfully with PMP 6.8, but not OK with 6.9.

Any idea?

PMP server log:

Jun 25, 2013 5:15:00 PM j run
INFO: new client from <src_ip>
Jun 25, 2013 5:15:00 PM aa a
INFO: WebSocket connected from <src_ip> using version 13
Jun 25, 2013 5:15:00 PM ai a
INFO: **** feature:97
Jun 25, 2013 5:15:00 PM ai a
INFO: ******** session recording=1 warning:false
Jun 25, 2013 5:15:00 PM ai a
INFO: ******** feature:33
Jun 25, 2013 5:15:00 PM an <init>
INFO: Binary support:true
Jun 25, 2013 5:15:00 PM bc <init>
INFO: Recording RDP session to /opt/ManageEngine/PMP/bin/../rec/20130625/pmp-Win08-test1_pmp-Win08-test1.admin2.rdpv from <src_ip>
Jun 25, 2013 5:15:00 PM com.toremote.gateway.client.ClientManager addClient
INFO: added client:77c3f3bd-d012-4fe0-9f50-c34ca6c37ba5 numericId:672271048
Jun 25, 2013 5:15:00 PM ao run
INFO: Map disk is disabled
Jun 25, 2013 5:15:00 PM ao run
INFO: Map printer is disabled
Jun 25, 2013 5:15:00 PM ao run
INFO: connecting pmp-Win08-test1
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO: java.net.UnknownHostException: pmp-Win08-test1
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.InetAddress$1.lookupAllHostAddr(Unknown Source)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.InetAddress.getAddressFromNameService(Unknown Source)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.InetAddress.getAllByName0(Unknown Source)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.InetAddress.getAllByName(Unknown Source)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.InetAddress.getAllByName(Unknown Source)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at java.net.InetAddress.getByName(Unknown Source)
Jun 25, 2013 5:15:00 PM com.adventnet.mfw.Starter$SysLogStream log
INFO:   at ao.run(SourceFile:94)
Jun 25, 2013 5:15:00 PM ab close
INFO: Close client 77c3f3bd-d012-4fe0-9f50-c34ca6c37ba5, status=0 reason=null
Jun 25, 2013 5:15:00 PM com.toremote.gateway.client.ClientManager removeClient
INFO: removed client:77c3f3bd-d012-4fe0-9f50-c34ca6c37ba5 numericId:672271048
Jun 25, 2013 5:15:02 PM ai exit
INFO: ---- handler exist:true hash:1601718
Jun 25, 2013 5:15:02 PM bc b
INFO: *** closing recording file:/opt/ManageEngine/PMP/bin/../rec/20130625/pmp-Win08-test1_pmp-Win08-test1.admin2.rdpv
Jun 25, 2013 5:15:02 PM bc b
INFO: Recording file closed:/opt/ManageEngine/PMP/bin/../rec/20130625/pmp-Win08-test1_pmp-Win08-test1.admin2.rdpv