Random output warning about MeshPartHeadsAndAccessories

Reproduction Steps

  1. Open Roblox Studio
  2. Open a place instance
  3. Observe “Instance outside of DataModel; could not read property Workspace.MeshPartHeadsAndAccessories” will be printed in the console as a warning
  4. Observe starting a play session in Studio will print the aforementioned warning several times too

Expected Behavior
The output outputs this warning with more context or not at all.

Actual Behavior
The output prints out vague warnings about MeshPartHeadsAndAccessories. I am unsure where these warnings lie and what is causing them.

N/A. This occurs with all betas off and all betas on. Seems as though it could be plugin-related?

Issue Area: Studio
Issue Type: Other
Impact: Low
Frequency: Constantly
Date First Experienced: 2022-02-04 16:02:00 (-05:00)


Hi @cloakedyoshi,

Would you be able to provide an example place file that demonstrates this issue?

This occurs for any place instance I attempt to open. It does not matter if it is an uploaded one, a Roblox template, or a local place file. That said, I have DMed you a template file where this occurred for me if it helps.

These users are also experiencing this issue FWIW:

I will double check my plugins to be sure.

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This warning happens when internal engine logic tries to reference Workspace.MeshPartHeadsAndAccessories from outside of the DataModel. This is almost always a bug, but I can’t seem to reproduce the issue myself.

I’m thinking it’s probably one of your plugins. Would you be able to provide a list of installed plugins?

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I’m having the same issue to for some reason

I have identified this plugin as the reason behind it in my case:

I took a peek on the creator’s public github repo for it, and it seems like this could be of interest for what he does behind the scenes:

Perhaps it could be because it loads in an R15 avatar in a ViewportFrame and/or WorldModel within a plugin window?

It did not print this warning until the last few days FWIW, so this warning message is a relatively new if unintended. Plugin also seems to still work fine.

Thanks for your help investigating this! I really appreciate it.

The good news is that I fixed this issue already and it will be released in ~2 weeks.
Until then, I’ll shut off the warning. You’ll need to restart Roblox Studio.


Awesome! Glad to help, and thanks for the swift responses!

yeah, this is a new bug it started this week
my console keeps getting non stop spammed by it and dont got a way to stop it

Just following up. Can you confirm that this issue is no longer happening? @cloakedyoshi

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Correct. This is no longer happening.

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