Description of problem:
system-config-network is not able to create any new interface. If the user tries to create a new connection, he is able to select the connection type. However, if he clicks on "Forward" nothing happens. If he press cancle, the app is crashing. Because of this nobody is able to create a new xdsl connection that is not detected and managed over networkmanager.

Version-Release number of selected component (if applicable):
1.5.93-2.fc10

How reproducible:
Always

Steps to Reproduce:
1. Start "system-config-network"
2. Click on "New"
3. "Select xdsl connection
4. Press forward
  
Actual results:
Nothing happens, no new connection is created, nor any further informations are asked.

Expected results:
A new dialog appears for connection details.

Additional info:
Starting the application from a terminal gives the following output:

Error in sys.excepthook:              
Traceback (most recent call last):    
  File "/usr/share/system-config-network/netconfpkg/exception.py", line 363, in <lambda>
    progname, version, gui, debug)                                                      
  File "/usr/share/system-config-network/netconfpkg/exception.py", line 285, in handleMyException
    while trace.tb_next:                                                                         
AttributeError: 'NoneType' object has no attribute 'tb_next'                                     

Original exception was:
ImportError: could not import bonobo.ui
Traceback (most recent call last):     
  File "/usr/share/system-config-network/netconfpkg/gui/maindialog.py", line 811, in on_addButton_clicked
    self.addButtonFunc[self.active_page](button)                                                         
  File "/usr/share/system-config-network/netconfpkg/gui/maindialog.py", line 869, in on_deviceAddButton_clicked
    interface = NewInterfaceDialog(self.dialog)                                                                
  File "/usr/share/system-config-network/netconfpkg/gui/NewInterfaceDialog.py", line 104, in __init__          
    self.on_start_page_prepare (None, None)                                                                    
  File "/usr/share/system-config-network/netconfpkg/gui/NewInterfaceDialog.py", line 109, in on_start_page_prepare
    self.druid.set_buttons_sensitive (False, True, True, True)                                                    
AttributeError: '__main__.GnomeDruid' object has no attribute 'set_buttons_sensitive'                             
Traceback (most recent call last):                                                                                
  File "/usr/share/system-config-network/netconfpkg/gui/NewInterfaceDialog.py", line 123, in on_start_page_next   
    self.druid.append_page(i)                                                                                     
AttributeError: '__main__.GnomeDruid' object has no attribute 'append_page'                                       
Traceback (most recent call last):                                                                                
  File "/usr/share/system-config-network/netconfpkg/gui/NewInterfaceDialog.py", line 123, in on_start_page_next   
    self.druid.append_page(i)                                                                                     
AttributeError: '__main__.GnomeDruid' object has no attribute 'append_page'