Traceback (most recent call last):
  File "/usr/share/kde4/apps/system-config-printer-kde/system-config-printer-kde.py", line 967, in on_btnSelfTest_clicked
    self.maintenance_command ("PrintSelfTestPage")
  File "/usr/share/kde4/apps/system-config-printer-kde/system-config-printer-kde.py", line 943, in maintenance_command
    self.lblInfo.set_usernameup ('<span size="larger">' +
AttributeError: 'GUI' object has no attribute 'lblInfo'