check out the presentation link I posted. Tons of improvements to the rigging tools With V1, it was written for me and our animators, so I put very little into the actual rigging tools. Just enough for it to be usable by me.
Onto the crash though. I have seen that before and I can’t remember right now what the cause was. I want to say it has something to do with objects with the same name, like if you have a head bone in your scene and you have a mesh named head, the weight import isn’t looking at the dagPath, only the name, and can try to import weights onto a bone, which for some reason crashes maya
Check and make sure you don’t have any naming conflicts. The reason importing via selection will work is because it ignores anything not in your selection.
This has all been greatly improved upon in the new version. By like a million percent or something