2011/11/15 safoura <s.seddig...@gmail.com>: > Hi Wander, > > I have been running my software on different computers (not an OS issue since > I > have working and non- working software on different OSs) > The software which is the java code calling an executable python code (which > uses the usb) on some of the systems runs fine. > On some others I get this message: > > > ERROR:usb.backend.libusb10:Error loading libusb 1.0 backend > Traceback (most recent call last): > File "Manager\build\pyi.win32\Manager\outPYZ1.pyz/usb.backend.libusb10", line > 600, in get_backend > File "Manager\build\pyi.win32\Manager\outPYZ1.pyz/usb.backend.libusb10", line > 160, in _load_library > OSError: USB library could not be found > 2011-11-15 18:23:59,220 ERROR:usb.backend.openusb:Error loading OpenUSB > backend > Traceback (most recent call last): > File "Manager\build\pyi.win32\Manager\outPYZ1.pyz/usb.backend.openusb", line > 598, in get_backend > File "Manager\build\pyi.win32\Manager\outPYZ1.pyz/usb.backend.openusb", line > 148, in _load_library > OSError: USB library could not be found > 2011-11-15 18:23:59,220 ERROR:usb.backend.libusb01:Error loading libusb 0.1 > backend > Traceback (most recent call last): > File "Manager\build\pyi.win32\Manager\outPYZ1.pyz/usb.backend.libusb01", line > 558, in get_backend > File "Manager\build\pyi.win32\Manager\outPYZ1.pyz/usb.backend.libusb01", line > 180, in _load_library > OSError: USB library could not be found > > > I have libusb-win32 installed on every computer. > Why is it that libusb1.0 is required even though that libusb0 exists. > Wasn't it said that at least one of these needs to be installed? > Please help since I can not figure out what other possibility I can think of > to > resolve this issue. >
PyUSB by default search for libraries in the following order: libusb 1.0, openusb and libusb 0.1. Because of that you see errors appearing in the log regarding libusb 1.0 -- Best Regards, Wander Lairson Costa https://github.com/walac https://gitorious.org/~walac ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
