python Triathlon.py

(Triathlon.py:4644): Gtk-WARNING **: Unable to locate theme engine in module_path: "adwaita",

(Triathlon.py:4644): Gtk-WARNING **: Unable to locate theme engine in module_path: "adwaita",

(TriathlonDirectFeedbackPlayer.py:4646): Gtk-WARNING **: Unable to locate theme engine in module_path: "adwaita",

(TriathlonDirectFeedbackPlayer.py:4646): Gtk-WARNING **: Unable to locate theme engine in module_path: "adwaita",
Traceback (most recent call last):
  File "TriathlonDirectFeedbackPlayer.py", line 665, in <module>
    run()
  File "TriathlonDirectFeedbackPlayer.py", line 658, in run
    bciDevice =  InputManager.BCIDevice(profile.deviceName)
  File "/home/twentyfour/Downloads/Triathlon/InputManager.py", line 279, in __init__
    self.devices.append(NIA_Data(25,0))
  File "/home/twentyfour/Downloads/Triathlon/InputManager.py", line 109, in __init__
    self.calibrate()
  File "/home/twentyfour/Downloads/Triathlon/InputManager.py", line 114, in calibrate
    self.record()
  File "/home/twentyfour/Downloads/Triathlon/InputManager.py", line 123, in record
    raw_data = self.interface.read()
  File "/home/twentyfour/Downloads/Triathlon/InputManager.py", line 86, in read
    return self.handle.interruptRead(self.ENDPOINT1,self.PACKET_LENGTH1,self.TIME_OUT)
  File "/usr/lib/python2.7/dist-packages/usb/legacy.py", line 188, in interruptRead
    return self.dev.read(endpoint, size, timeout)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 975, in read
    intf, ep = self._ctx.setup_request(self, endpoint)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 102, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 215, in setup_request
    intf, ep = self.get_interface_and_endpoint(device, endpoint_address)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 102, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 225, in get_interface_and_endpoint
    for intf in self.get_active_configuration(device):
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 102, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 236, in get_active_configuration
    self.managed_open()
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 102, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/usb/core.py", line 120, in managed_open
    self.handle = self.backend.open_device(self.dev)
  File "/usr/lib/python2.7/dist-packages/usb/backend/libusb1.py", line 786, in open_device
    return _DeviceHandle(dev)
  File "/usr/lib/python2.7/dist-packages/usb/backend/libusb1.py", line 643, in __init__
    _check(_lib.libusb_open(self.devid, byref(self.handle)))
  File "/usr/lib/python2.7/dist-packages/usb/backend/libusb1.py", line 595, in _check
    raise USBError(_strerror(ret), ret, _libusb_errno[ret])
usb.core.USBError: [Errno 13] Access denied (insufficient permissions)