how i closed the topic?

i just finally saw this it literally uploaded just fine with all the errors so all good here! i saw red and got nervous lol

Its complaining about vrcfury since the avatar uses it, go add it to your VCC and add it to your project if you haven't done so

Things like this done in unity will not always work 100%. My only explanation for what could have happened is that the breast bones are too different, rendering them incompatible for a successful merge. Where as in blender, you can rename the bones or simple delete them then merge new bones in their place.

i think the most recent poiyomi version breaks it

Pretty sure they are talking about this, can't be on a SDK lower than 3.9.0 when uploading a new avatar for their security reasons, they done this multiple times when they stop supporting older versions of sdks https://ask.vrchat.com/t/developer-update-14-august-2025/46303#p-83884-avatar-id-generation-5

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