So I followed your procedure exactly, and I didn’t get the error. Could you be more specific on how this error is reproduced, or make pictures for each step?
Post Approval Procedure
If you want to post in a section you don’t have access to, you can follow the Post Approval Procedure, outlined in Rule 15.1:
Look at the About the Studio Bugs category topic to format your post correctly. You’re half-way there, you just have to add a bit more information, like pictures, one for each step would be amazing. You could also probably say what the impact is at the very beginning as well as at the end. Adding a repro file would be even better. Even though it could be created anywhere, it’s still helpful just in case your environment needs to be accounted for the error.
If you looked in my previous post, I was talking about the “Post Approval Procedure” in the details section:
Now that you have a reproduction of it, you should try moving it to #platform-feedback:studio-bugs through the post approval procedure. Make sure to include the reproduction from your reply in your topic, since it works, and just add a couple more details to it to flesh it out! Always make sure to consult the studio bugs about page to make sure you get all the details right!
Ok. I will follow that procedure and replicate this post to the bulletin.
For now I found the solution is to unanchor the parts that need to be animated.
This makes sense given the fact that anchored parts cannot animate. I think for whatever reason there is no pre-check to see if the parts are unanchored so the plugin freaks out and crashes.