Reply To: Blender 3.0 messed up my animation progress (PROXIES & LIBRARY OVERRIDE ISSUE)

From memory Blender has always been backwards compatible except for the jump from 2.49 -> 2.5

and not 2.93 -> 3.0

I am finding this rather annoying too (as I’m usually working in 3 different versions for different projects at any 1 time haha)

Regarding your issue, it’s important to remember that the data is most likely in the file and you just need to figure out a way to reconnect it (or get it into a new file).  So I always try to remind myself of that so I don’t freak out when things break.  

But never save over a broken file – always increment it.  If something is unconnected or broken and you save it, then it won’t stay in the file – it will be purged if Blender doesn’t think it needs it.

So always do an incremental save so if the fix you tried doesn’t work – you can always go back and try again a different way.

  

Are the arms set to IK and you are moving the FK bones?

Maybe this wasn’t keyed in the animation data (but was set away from default).  Look at that first.  It could be as easy has turning the IK on (or off)

The error message says that  the library has been found, but not 1 linked data block.

If you change the outliner to display the blend data – then down the bottom it will show you any broken links – maybe you can find out what it should be linking to.

It’s possible it’s just the rig UI or maybe you have linked in the animation data? 

It’s also possible that it doesn’t relate to anything you need (maybe the video reference or something similar)

The next thing I would try would be to start a fresh file and then link and append in all the stuff you need.

Link in the character new.  I’m pretty sure proxies still work in 3.0 (but not 3.1) but I haven’t used the official 3.0 as yet (I’m running 3.1 alpha for most things).

But once you get the character in there fresh, try appending in the animation data from the broken file.

If it works, then append in all the BG elements etc.

You can even try just appending in the whole scene from the broken file to a new one – but it is likely not to work in your situation (but you can try – there are many situations where that is the fastest/easiest solution)

Failing any of those things you can always try to post the file and I’ll take a look to see if I can repair it.