Well, thanks for trying or even considering to help.
This is an example MHX2 file:
captainshipoftheline.mhx2 (1.9 MB)
Here are some pointers to the errors:
When importing and MHX2 file through the addon, these are my settings for creating an MHX2-type rig:
These are the error messages:
For an existing rig, this is what the bone layer panel looks like. Nothing surprising here, this happens to all custom rigs with 4.0.
Error when pressing enable layers:
Error when trying to swithc between FK and IK:
I will probably have another go at it, as well, but given that I only know a little bit of python, I don’t have high hopes that I will get anywhere in a reasonable amount of time.
These are some great resources though:
https://wiki.blender.org/wiki/Reference/Release_Notes/4.0/Animation_Rigging/Bone_Collections_%26_Colors:_Upgrading
If you try, thanks very much and if you don’t: Thanks anyway!