Blender4.X-UPBGE_mmd-uuunyaa-tools_ERROR&FIX

[AkagiVoid]

Hi, I'm using Blender's Game engine 4.1. :3
After doing the tutorial to the T, it still gave meh an error. X3
Before activating it:

After attempt to activate it:

(Updated 2023)
So I officially fixed dat by doing dis:

Renaming ""BoneGroup" to "BoneCollections" and "bone_groups" to "bone_collections", seem to have fixed the problem.

And TADA, just remember dat "mmd_tools" haz 2 be enabled first, save preferences, quit blender, launch blender again, open preferences again, add-ons section, search ""mmd", then enable "mmd_uuunyaa_tools", then save preferences, quite blender again, and now open blender again and U should be all set to go. :3
(U don't actually have to restart blender, although it's good practice to do so, dat way no conflicts will happen. ^w^
I even restart my computer after every update or GPU driver installation. X3 )

I hope that helps a few people out. X3

[AkagiVoid]

I now understand the issue for 4.X blender. X3
If anyone else is interested, then go to:
https://wiki.blender.org/wiki/Reference/Release_Notes/4.0/Animation_Rigging/Bone_Collections_%26_Colors:_Upgrading

Go into the armatures.py, edit Line 333 "BoneGroup" to "BoneCollections", Line 334&334 "bone_groups" to "bone_collections", then save the py, try to re-enable the plugin, and now it should work properly again. :3

[UuuNyaa]

Thank you for the report 😀

MMD UuuNyaa Tool's Blender version support policy is as follows:
https://mmd-blender.fandom.com/wiki/MMD_UuuNyaa_Tools#Requirements

By the way, we need MMD Tools to support Blender 4.x first. And it is in progress with the following pull request:
UuuNyaa/blender_mmd_tools#117

[Dilrevx]

The above wiki link about v4.x upgrading is dead. Refer to this if needed

https://developer.blender.org/docs/release_notes/4.0/upgrading/bone_collections/

[Dilrevx]

The above fix only fixes the type hint error, which is a syntax check error before runtime. So in fact renaming pose.bone_groups to pose.bone_collections may produce errors. Initialization doesn't check this so I'm not sure about it.

Another thing for v4.2 users. For marketplace "mmd_tools" installs, the module name is now "bl_ext.blender_org.mmd_tools" instead of "mmd_tools". Edit import_mmd_tools in utilities.py