Yet another upload problem

I’ve tried searching up everything I could on this error, I’ve cleared the avatar blueprint ID, I’ve done everything I could find. I’m making a copy of an avatar with fewer/different attachments, and even after clearing the blueprint ID I keep getting these errors:

And again, before it’s suggested - yes, I DID clear the Blueprint ID. I’d appreciate some help, because I’m trying to make Normal and Alternate forms of this av, then Quest versions of each.

For future people, this particular time it was a bad image maybe for the thumbnail, changing when Kepora changed the thumbnail it uploaded ok.

Yep. I had to try more than a few times, but…well, brute force won out in the end!

I’m, glad you all found a solution. Good work y’all!