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Importing very old JSONs back into spine

PartyPangolin

So I have a number of very old JSONs and atlases. I've been trying to import the JSONs back into spine so I can work with them and update them. The thing is, some of them import perfectly while others don't import at all. I'm not sure what the difference between them is. Any ideas on how to get these old JSONs to show up in Spine?

Erika

Hello! I think this can be easily solved this way:

Downgrade Spine to v. 3.3.07
Settings - Spine User Guide: Version
Import the JSON
Import - Spine User Guide
Save the Spine project
Update Spine to the version you prefer and reopen the project!

Nate

Note you can also do it from the command line if you have many files:
Spine 3.8 released - mesh tracing, polygon packing, and more

PartyPangolin

Wow, that version revert feature is really cool! Unfortunately, it didn't solve my problem. But! I did figure it out. I'll share in case it's ever useful to someone else:
The old JSONs that weren't working contained mesh animations. When compared with other (equally old) mesh JSONs that were working, we noticed there was a small difference between them. The broken JSONs all contained the term "skinnedmesh", while the functional ones simply had "mesh". I removed "skinned" from the broken ones and magically they work now, hooray!

Thanks a lot for your guys' help though, and the quick response!

Nate

Glad you got it worked out!

The skinnedmesh type of attachment is from very old skeleton JSON data. If the JSON is so old that the Spine version isn't listed in the JSON, it may take some trial and error to figure out which version of Spine you need to import the data. If modifying the JSON works, that's great too!