Old node groups aren't working in asset browser when dragging and dropping them into GN #116571
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Reference: blender/blender#116571
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System Information
Ubuntu 20.04
Blender Version
4.02
Short description of error
Old node groups aren't working in asset browser when dragging and dropping
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
I use to just drag and drop the node group into geometry nodes (from the asset browser) now the icon is there but when I drag and drop an old node group nothing happens.
Attached blend file.
axis arrow grp_asset.blend
System info.txt file
system-info.txt
axis arrow grp_asset.blenddoes not seem to contain the group you are trying to drag and drop [Gin_AttrViewer]Please share that one as well (seems to be in your
Main LibraryAsset Library?) -- at last this is where you seem to drag it from?@lichtwerk Ok here's the Blend file where the node group is located in. It's almost like a "pointer" to some of the old node groups aren't "transferring over / being used / was renamed" (but that's just a guess)
AttributeViewer_V3.blend
@lichtwerk Do you need more examples? I have several.
I can confirm. Some commit between 3.6-4.0 affected this.
This is due to failing poll function which was updated in
30e3caaf82metadata->propertiesis nullptr here.cc @lichtwerk @JulianEisel
Thx checking @PratikPB2123
Will look into a fix
Hm, not sure if this really has a proper "fix".
That asset file was saved with (3, 2, 14).
But looking at commit
bdb5754147(specifically the following from the commit message):makes me think that indeed, the proper solution to this issue is just re-saving the files that contain the assets with a version after
bdb5754147(so for example current 3.6 LTS). Tested this, this works as expected, the nodegroups can then be dropped as expected.@HooglyBoogly : what do you think?
I'm not totally sure yet. I started by trying to add the file to my asset library folder so I could test dragging it into a file. But it didn't show up in the asset library. Then I tried opening the file and I hit an assert in the asset system. But according to Pratik's point, I'd agree, yes, the solution is just re-saving the asset file, and I don't think this is a bug.
So my vote would also be to accept this as current behavior.
What we should have done though is mention this in the release notes (otherwise not sure if there is a good way on the blender code side to take care of this).
https://wiki.blender.org/wiki/Reference/Release_Notes/3.4
https://developer.blender.org/docs/release_notes/3.4/
(under "Compatibility"?)
Suggested wording: "Since metadata like the node tree type and its inputs
and outputs has to be saved in the file (see
bdb5754147), re-saving thefiles that contain the assets is required"
Thanks, good idea. I used slightly different wording, but it's mentioned in the new wiki now.