tigervnc server 1.8 will support on rhel 6.4

I was updated the latest tiger vnc 1.8 on rhel6.4 with kde
but once starting the vnc service and server , clinet vnc-viewer not connecting . please find the VNC session log

startkde: Shutting down...
kdeinit4_wrapper: Warning: connect(/root/.kde/socket-uiloadhost19/kdeinit4__3) failed: : No such file or directory
Error: Can not contact kdeinit4!
startkde: Running shutdown scripts...
Application::crashHandler() called with signal 11; recent crashes: 1
xprop: unable to open display ':3'
xprop: unable to open display ':3'
startkde: Done.
KCrash: Application 'kwin' crashing...
kwin: cannot connect to X server :3