01-03-2018 09:23 PM
@mrowkapj - Quik doesn't do slow motion edits, but other editors like VSDC or iMovie may be able to do that effect for you.
Not sure why the edit didn't save though. Please close the program and try it again. If the issue continues, please try reinstalling the program. If that doesn't correct it either, our team at https://gopro.com/help/ContactUs can work with you to do some additional troubleshooting.