demo.py error

[p1234321]

hello,
when I want to run the demo.py on OSX Sierra I get following error:

2017-11-10 19:54:44.996 Python[1135:26962] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead.
Traceback (most recent call last):
File "demo.py", line 5, in
import usbdmx
File "/Users/paulpritz/Downloads/usbdmx-master/usbdmx.py", line 35, in
_usbdmx = ctypes.cdll.LoadLibrary("./libusbdmx.dylib")
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/init.py", line 443, in LoadLibrary
return self._dlltype(name)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/init.py", line 365, in init
self._handle = _dlopen(self._name, mode)
OSError: dlopen(./libusbdmx.dylib, 6): image not found

please help

thanks!