Hi, today I received an email from a user who had trouble using the NetMD Python scripts on MacOS X. He received the following error message: $ ./upload.py Traceback (most recent call last): File "./upload.py", line 3, in <module> import usb1 File "/Users/henningautzen/linux-minidisc/netmd/usb1.py", line 2, in <module> import libusb1 File "/Users/henningautzen/linux-minidisc/netmd/libusb1.py", line 54, in <module> libusb = cdll.LoadLibrary('libusb-1.0.so.0') File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ctypes/__init__.py", line 423, in LoadLibrary return self._dlltype(name) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ctypes/__init__.py", line 345, in __init__ self._handle = _dlopen(self._name, mode) OSError: dlopen(libusb-1.0.so.0, 6): image not found $ The problem is obvious, the script cannot find the shared libusb library even though it has been installed. The library is located in a different location when installed with Macports, namely: /opt/local/lib/libusb-1.0.dylib I created a temporary patch for the user to fix his problem (patch attached). We need, however, a proper patch to fix that. Adrian
--- libusb1.py 2010-02-11 23:12:27.000000000 +0100 +++ libusb1.py.new 2010-02-16 00:19:11.000000000 +0100 @@ -51,7 +51,7 @@ ('tv_usec', c_long)] timeval_p = POINTER(timeval) -libusb = cdll.LoadLibrary('libusb-1.0.so.0') +libusb = cdll.LoadLibrary('/opt/local/lib/libusb-1.0.dylib') # libusb.h def bswap16(x):