[KevinH]

So hopefully the following change is a bit simpler and should make things work too (but I have not tested this). It just adds the desired output epub path/name as the final argument to the jar.

    # process ODT file                                                                                                          
    if odt_file:

        # assemble w2l command line                                                                                             
        args = ['java', '-jar', w2l_path, '-' + output_format]
        if os.path.isfile(w2l_config_path):
            args.append('-config=' + w2l_config_path)
        if os.path.isfile(w2l_css_path):
            args.append('-stylesheet=' + w2l_css_path)
        args.append(odt_file)
        epub_path = os.path.splitext(odt_file)[0] + '.epub'
        args.append(epub_path)

        # run w2l                                                                                                               
	result = w2lWrapper(*args)