Working but throwing an error in 2.0.0 α

[j2l]

Fantastic tool!
Hope it will be integrated as stock Blender addon soon.
I tried a bone and a cube and it works but it stills complains:

WARN (bpy.rna): c:\b\win64_cmake_vs2017\win64_cmake_vs2017\blender.git\source\blender\python\intern\bpy_rna.c:1476 pyrna_enum_to_py: current value '0' matches no enum in 'OBJECT_OT_create_driver_constraint', '(null)', 'action'
Traceback (most recent call last):
  File "C:\Users\nobody\AppData\Roaming\Blender Foundation\Blender\2.81\scripts\addons\driver_constraint_addon\constraint_operator.py", line 583, in execute
    self.create_property_driver(wm,context,scene,active_object)
  File "C:\Users\nobody\AppData\Roaming\Blender Foundation\Blender\2.81\scripts\addons\driver_constraint_addon\constraint_operator.py", line 659, in create_property_driver
    curve_var.targets[0].bone_target = bpy.context.active_pose_bone.name
AttributeError: 'NoneType' object has no attribute 'name'

location: <unknown location>:-1

location: <unknown location>:-1

The driver is missing the bone name:

I also tried after selecting the bone in pose mode then selected both mesh and bone.
Maybe because the name is used as index?
bones["Bone"].name
Maybe bpy.context.active_pose_bone.name moved away from 2.8+?
If I change its name, it also changes the index:
bpy.context.object.data.bones["Bonetest"].name = "Bonetest"

Hope it helps