We’ve made some changes to the recommended way of interfacing Python on Windows to take account of Python 3 and Windows 64-bit. The first change is in the loading of the DLL file itself.. if platform.machine().endswith(’64’): bardecodeLibrary = os.getcwd() + ‘../../../SoftekBarcode64DLL.dll’ a=CDLL(bardecodeLibrary) else: bardecodeLibrary = os.getcwd() + ‘../../../SoftekBarcodeDLL.dll’ a=WinDLL(bardecodeLibrary) Note the use of CDLL on