5 Replies
Leslie McKerchie

 Hello Jessica and welcome to E-Learning Heroes :)

We have seen a few issues where an SWF file has been in the published output, even with the course is published to HTML5 only. We've seen this happen with video, zoom regions, and logos.

Do you have one or more of these items in your course as well? I'd like to update the report to reflect the impact for you.

In the meantime, users are manually deleting the file from the published output to meet the requirements of upload to their LMS, but this is a supported activity by our team.

Envision Core Training

Thanks for the quick reply and welcome, Leslie!

I do have a video embedded on a slide in that course. I will delete it and try uploading again. If it doesn't work, I'll let you know.

I'm told by CSOD that there is a possibility that they could turn off the SWF blocker feature, but that it would compromise security and may put us out of compliance with our accreditation IT security standards outlined by IACET. 

Thomas Halbritter


I'm exactly the same problem. I created a video with replay 360. The mp4 video I embedded in a storyline 360 slide. I got a critical error message from cornerstone. .swf Upload not allowed. But there’s no flash. I used the modern player and html5.

I uploaded a video from an existing course in cornerstone again. In may the upload still worked. Now I suddenly get this  critical error.swf not allowed. I urgently need help because my course always has embedded videos. Thanks for support.

Ashley Terwilliger-Pollard

Hi Thomas,

The issue where an SWF file is created for videos even if the course is published in HTML5 only format is fixed in the latest update of Storyline 360. Do you know what version of Storyline you're using? You can check by going to the "Help" Tab -> "About Articulate Storyline". You're looking for Storyline 360, build 3.29.19305.0

Our team is still working on an issue where the SWF file appears if you've included a logo in your player.  While we work on that fix, you can delete the SWF file from your published output and then upload to Cornerstone.