Description of problem:

When trying to create a new virtual machine using virt-manager on qemu:///session, it gives the message "Error: build_row() takes at least 5 arguments (4 given)" on step 1 of the wizard. The forward button is grayed out and cannot be used.

Version-Release number of selected component (if applicable):

virt-manager-0.8.4-2.fc13.noarch

How reproducible:
Always

Steps to Reproduce:
1.Run virt-manager -c qemu:///session
2.Click the "Create a new virtual machine" button
  
Actual results:
"Error: build_row() takes at least 5 arguments (4 given)", forward button on the wizard grayed out even after typing on anything on the text box.

Expected results:
Working without error

Additional info:

The culprit seems to be on /usr/share/virt-manager/virtManager/uihelpers.py, at the following block of code:

    # For qemu:///session
    if conn.is_qemu_session():
        nettype = VirtualNetworkInterface.TYPE_USER
        add_row(nettype, None, pretty_network_desc(nettype), True)
        set_active(0)
        return

The function add_row() forwards all its arguments to build_row. However, build_row() is expecting 5 arguments, and here add_row() is passing it only 4.