i dont know what happened, after create paths with the friction tool, the final path transforms in a simplified and mal-formed path. i think the script also tryes to close the path.
Are you sure you are using the latest version of the plugin? I just tried and could not reproduce your problem... As long as I cannot reproduce it, I cannot fix it. Also please try to give more information: Plugin version, Java version, ways to reproduce the problem, what goes wrong (screenshot?), etc.