Error: Unable to cast object of type. Unable to save project!

Hello Everyone!

I have some great news to share! We just released another update for Storyline 360. In Update 74, we’ve included important fixes and some new features!

This update fixes the bug that was causing the Error: Unable to cast object of type. Unable to save project! 

To take advantage of this update, launch the Articulate 360 desktop app on your computer and click the Update button next to Storyline 360. You can find our step-by-step instructions here!

Please let me know if you need any additional help!

What does it mean if you update Storyline and it DOES NOT fix the problem? I have a large course that I need to edit and I am currently getting the error message regarding Unable to cast object type. Unable to save project. 

Hi Nicole,

Welcome to the E-Learning Heroes community!

I'm sorry to hear you're experiencing this issue and am happy to help troubleshoot. I have a few clarifying questions to start.

• Can you confirm that you're using the most up-to-date version of Storyline 360? Currently, we're on build 3.74.30180.0.
• If you try importing your slides into a new Storyline project, does the issue persist?
• I want to share this thread where the customer found the issue resulted from having an extra feedback master.

If you're willing to share your file with our team, you can do so here, so that our Support Engineers can investigate what's going on.

Hello and thank you for getting back to me. I can confirm that I am using the most recent version of Storyline. Currently, someone else is working on this so I have been asked to wait before moving forward. You will likely hear from this person or me should I get it back.

Thank you,

Thank you for the update, Nicole! We appreciate it! 

It looks like part of your email signature came through when you replied via email. You can remove that if needed by clicking ‘Edit’ beneath your response. Here’s a quick Peek video if you need help.

Have a great start to your week!

Thank you for the notice on the edit. Also, I did end up submitting a case for this. I look forward to hearing back! 

Hi Nicole,

Great idea opening a case! I see you've connected with my teammate, Philam, and he's currently conducting some tests on your project file. You're in good hands!

Hello Everyone!

I'm happy to share that we have released Storyline 360 version 76 (Build 3.76.30446.0)!

Included in this release is the fix for the bug which caused the error Unable to cast objects of type 'Articulate.Design.Shapes.Placeholder' when saving project files.

Now all you need to do is update Storyline 360 in your Articulate 360 desktop app on your computer. You'll find our step-by-step instructions here.

Please let us know if you have any questions by reaching out to our Support Engineers directly.

Have a great day!

Thank you: the issue seems to be resolved :-)