Anaconda installer crashing with traceback "Interface "org.freedesktop.NetworkManager" isn't exported (or may not exist), can't access property "Interface""

Issue

• Anaconda installer crashing with traceback Interface "org.freedesktop.NetworkManager" isn't exported (or may not exist), can't access property "Interface"
• Complete traceback:

Installation crashes early in stage2:

detecting hardware...
waiting for hardware to initialize...
detecting hardware...
waiting for hardware to initialize...
Running anaconda 13.21.44, the Red Hat Enterprise Linux system installer - please wait.
12:36:25 DISPLAY variable not set. Starting text mode.
12:36:29 Starting VNC...
Traceback (most recent call last):
  File "/usr/bin/anaconda", line 1006, in <module>
    runVNC()
  File "/usr/bin/anaconda", line 341, in runVNC
    vncS.startServer()
  File "/usr/lib/anaconda/vnc.py", line 214, in startServer
    self.initialize()
  File "/usr/lib/anaconda/vnc.py", line 102, in initialize
    netinfo = network.Network()
  File "/usr/lib/anaconda/network.py", line 317, in __init__
    self.update()
  File "/usr/lib/anaconda/network.py", line 326, in update
    devhash = isys.getDeviceProperties(dev=None)
  File "/usr/lib/anaconda/isys.py", line 392, in getDeviceProperties
    device_interface = str(device_props_iface.Get(NM_MANAGER_IFACE, "Interface"))
  File "/usr/lib/python2.6/site-packages/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.6/site-packages/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/python2.6/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Interface "org.freedesktop.NetworkManager" isn't exported (or may not exist), can't access property "Interface"