pythonista is a great app, I appreciate it very much. Now I've tried to write my own little script to share urls with my bookmarking service. The script usually works when I run it for the first time, but on the second time, appex.get_url() returns None and when I try to use the url to qrcode example script, I get an 'script running, You cannot start this action because a script is already running.' error. Maybe I'm doing something wrong?