Traceback (most recent call last):
  File "/usr/bin/hp-toolbox", line 280, in <module>
    toolbox = ui.DevMgr5(__version__, device_uri,  None)
  File "/usr/share/hplip/ui5/devmgr5.py", line 253, in __init__
    self.initUI()
  File "/usr/share/hplip/ui5/devmgr5.py", line 324, in initUI
    self.DiagnoseQueueAction.setIcon(QIcon(load_pixmap('warning', '16x16')))
AttributeError: 'DevMgr5' object has no attribute 'DiagnoseQueueAction'