Some if not all of my and some of the UGC creator’s head cannot be equipped AT ALL.
This error appears.
After checking the network tab in the devtools, I suspect that the issue is the default mood that gets equipped at the same time.
Expected behavior
Equip a Dynamic Head made by a UGC creator, not Roblox.
(Try any made by @ev1)
Hi @ev1 Thank you for the bug report - We have confirmed that this is indeed caused by a bug on our end.
We are tracking for an operational fix for your user account (ETA Monday).
We are still root causing the issue. As a work around (or for others that have a similar issue), please purchase a free bundle with the same mood animation asset and that should resolve the issue.
@ev1 - We have granted you the mood animation asset and that should resolve your issue. Please let us know if more help is needed.
Thank you
Hello!
This issue is not only happening to @ev1, hundreds of thousands of users, including myself, are not able to use any of my dynamic heads as well as other UGC creators’ dynamic heads because of this.
Hi @infchris Thank you for the report. We have confirmed that this is indeed a critical bug that affected a larger user base. We have mitigated the bug and have stopped any new users from being affected.
We are working on a fix to restore the mood animation to affected users.
As a work-around, buying a free bundle that contains the mood asset will resolve the issue for all bundles.
Thank you for replying. I looked into it and found out that older UGC dynamic heads use the DefaultFallBackMood, while newer UGC dynamic heads use the Default Mood. For some reason, the “DefaultFallBackMood” asset was removed from peoples’ inventories. My apologies if you were already informed about this, I wanted to double check. 
(Default Mood asset, which can be obtained by buying any newly created UGC dynamic heads)
(DefaultFallBackMood asset, which can be obtained by buying any older created UGC dynamic heads)
I am aware of the current work-around and am informing as many people about it as possible. Thank you.
This issue should be resolved now! You should be able to equip UGC Dynamic Heads again.
Let me know if you encounter this issue in the future.
