Nan Error in Results Slide

I've seen the "NaN" calculation as well today in both preview mode and when published to LMS and viewed from LMS. In our course we have one final test. On the results slide after failing the test, there is a Retry Test button. When that button is clicked, there is a trigger that resets the results of the final Test. However, once clicked, the learner's score changes to "NaN". Although this also directs them to the Intro slide to the test, it is still a noticeable change. I'm attaching a screen capture here for reference.

Hi Laurie, 

Does the score adjust when you revisit the results slide after reattempting the quiz? If you'd like to share your .story file here I'm also happy to take a look! 

Hi Ashley,

The score updates to the correct number percentage once the quiz is taken again. (No instance of "NaN")

Hi Laurie,

I'm glad to hear that at least! It is going to reset the score, but that should happen so quickly before jumping back to the first slide it's often not something folks see (either the NaN or the 0). Are you seeing this just in preview, or also in your published output?

If you wanted to share your .story file I'm happy to take a look at it and do some additional testing.

Hello, Ashley! I haven't seen this in Storyline yet; I was just wondering if anybody else has.

I'll take a screenshot if I see it and share the .story file (if I can)! Thanks for responding.  

Sounds great, Heather! We're here if you need anything else. 

I am having a problem when I click Retry.  Whe I click Retry you quickly see NaN% come up, then it restarts the test.  I have the trigger set to reset the score when you click retry.  Once you get thru the test. Infinity% comes up.  Any ideas why?

Hi Christina,

Can you share a copy of this .story file with us? I'd love to take a look at what you have set up and how it's behaving. 

Did you ever get a storyline file to look at? I'm getting this same error in my course. Would you look at my storyline file if I uploaded it?

Hi there, Rachel. So sorry you're also hitting this roadblock.

While I don't see a Storyline project that shows a NaN% error, we will take you up on that kind offer! Here's where you can share your .story file with us, so we can take a close look. 🌟

I submitted a case and uploaded my file.

Thanks, Rachel!

I see my teammate, Abel, is testing your file. You'll hear back with his findings shortly, and I'll follow along as I'm curious to know what's causing this error!

I just uploaded a file that is getting the same error.  We've tried publishing to Tin Can API and SCORM and getting the same error in our LMS

So sorry you're running into that message, James.

I'm glad you reached out to us here, and excellent move to also open a support case! I see my teammate, Jose, is looking into some next steps for you to try as I type this. Keep an eye out for an email from him shortly!

Did any of you find a solution on this or have been provided with one? I have read all the threads related to this topic and still can't figure out how to solve it.

I am experiencing the exact same  thing as @Christina. 

Thanks in advance.

Hi Alexandra, 

We've seen this happen under two conditions, do either of these match what you're seeing: 

• HTML5: Results.ScorePercent shows as "Nan" for a split second when Retrying when there's a Question bank question with a Jump-to-specific-slide-number trigger in the feedback layers.
• In Flash, the Results.ScorePercent would show as 0 when retrying.

If so, it's an open issue with our team, and we'll keep you posted here! If you think you've run into something else, could you share a copy of your .story file with us so that we can take a look? 

You can share it publicly here, or send it to our Support Team here. We'll delete it when done troubleshooting. 

Any resolution to this issue (NaN appearing when clicking 'Retry Quiz')?

Hi, Victoria!

I'm so sorry you've come across that NaN error. No news on a solution yet, but we promise to update this discussion with any new developments. Here's a peek into how we tackle bugs!

If there's anything else I can answer, I'll be here!

Hi Katie, 

Is this issue has been resolved? Appreciate if there is an update on this. Thanks!

Hi Kydon Digital Media,

I don’t currently have any updates, but you are now subscribed to this conversation which means as we share updates here, you’ll automatically be notified!

I'm also getting this issue. To clarify, when you state, "HTML5: Results.ScorePercent shows as "Nan" for a split second when Retrying when there's a Question bank question with a Jump-to-specific-slide-number trigger in the feedback layers," if I have a trigger set on the Retry button on a Results Slide to restart the Assessment (i.e., Jump to slide X - Assessment), then that is why I'm receiving the flash of NaN? Do you guys have a solution yet to this? Thanks! 

Hi Morgan!

We don't have any new updates to share. We've seen this error occurs when the button is triggered on a Feedback Layer. If you're seeing something different, please let me know so we can share it with our team.

Hello everyone!

For all of those who are you using Storyline 360, you'll be pleased to know that we just released the fix for this bug today in Storyline 360 Update 37 (Build 3.37.21453.0)!

The results slide will no longer show %infinity% or NaN when a user exits and resumes the course. 

One of the benefits of an Articulate 360 subscription is that you get continuous updates when new features and bug fixes are available. To install the newest update for the Articulate 360 desktop app, simply click the blue Update button in the top right corner. The update will automatically download and install without any additional prompts.

If you run into any trouble, please let us know in this discussion!