Stop the script, wait for the script to properly exit (check the console log, when it says 'APA AIO Smither has terminated', you're good). Then start the script again. Keep doing this until the GUI shows.
I'm trying to figure out the reason for this issue because it's strange that sometimes the script starts and rarely it fails to start. Normally in programming either something works or it doesn't. Hopefully i'll figure out the issue soon though haha.
apa