I have installed Displex 0.7.2 from Source Forge. But I am not getting any indicator when i run indicator-displex instead I get the following error

spv@matrix:(~)$ indicator-displex 



(indicator_displex.py:5120): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",



(indicator_displex.py:5120): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",



(indicator_displex.py:5120): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",



(indicator_displex.py:5120): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

A saved configuration file was found.  Its contents are:

{'metacity_start_cmd': 'metacity --replace &', 'intel_gma_aiglx': False, 'ignore_desktop_hints': True, 'sm_disable': True, 'displex_menu_sccsm': True, 'displex_onstart_restart_compiz': False, 'loose_binding': False, 'compiz_start_cmd': 'compiz --replace --sm-disable --ignore-desktop-hints ccp &', 'indirect_rendering': False, 'displex_menu_compiz_opts': True, 'fast_filter': False, 'no_fbo': False, 'displex_version': '.71', 'displex_verbose': False, 'displex_menu_ccsm': True}



versions are the same.  Using saved settings.

Settings restored from configuration file:

{'metacity_start_cmd': 'metacity --replace &', 'intel_gma_aiglx': False, 'ignore_desktop_hints': True, 'sm_disable': True, 'displex_menu_sccsm': True, 'displex_onstart_restart_compiz': False, 'loose_binding': False, 'compiz_start_cmd': 'compiz --replace --sm-disable --ignore-desktop-hints ccp &', 'indirect_rendering': False, 'displex_menu_compiz_opts': True, 'fast_filter': False, 'no_fbo': False, 'displex_version': '.71', 'displex_verbose': False, 'displex_menu_ccsm': True}

------------

************************************************************

====================================

DisPlex

System Information

------------------------------------

Compiz Effects Installed     : True

     Compiz 0.9.6

Compiz CCSM Installed        : True

Compiz Simple CCSM Installed : False

Emerald Decorations Installed: False

GTK Window Decorations       : True

Disper Installed             : False

AcerHK GUI Installed         : False

====================================

************************************************************



**

compiz --replace --sm-disable --ignore-desktop-hints ccp &

**

Traceback (most recent call last):

  File "/usr/share/indicator-displex/indicator_displex.py", line 1581, in <module>

    control = IndicatorDispex()

  File "/usr/share/indicator-displex/indicator_displex.py", line 220, in __init__

    self.set_menu()

  File "/usr/share/indicator-displex/indicator_displex.py", line 1071, in set_menu

    desktop_state = self.gconf.get_value('/apps/nautilus/preferences/show_desktop')     # Get current value from gconf

ValueError: gconf key /apps/nautilus/preferences/show_desktop has no value

Please tell me what to do to get the indicator.