System Information
Operating system: Windows 10
Graphics card:

Blender Version
Broken: 2.82 ( tried reinstalling on May 2 - same issue)
no other technical information on version or date shows on splash screen

Short description of error
Add either Gears or Bolts> fatal errors

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

3D Viewport
no other meshes involved
Object Mode
Add > Mesh > Gears > Gear

1. several error messages appear (see System Console dump below)
2. a default gear does get generated
3. but system won't respond after

Read prefs: C:\Users\Don\AppData\Roaming\Blender Foundation\Blender\2.82\config\userpref.blend
found bundled python: C:\Program Files\Blender Foundation\Blender 2.82\2.82\python
Warning: property 'release_confirm' not found in keymap item 'OperatorProperties'
Traceback (most recent call last):

File "C:\Program Files\Blender Foundation\Blender 2.82\2.82\scripts\addons\add_mesh_extra_objects\add_mesh_gears.py", line 749, in invoke
  self.execute(context)
File "C:\Program Files\Blender Foundation\Blender 2.82\2.82\scripts\addons\add_mesh_extra_objects\add_mesh_gears.py", line 714, in execute
  tipGroup.add(verts_tip, 1.0, 'ADD')

RuntimeError: Error: VertexGroup.add(): cannot be called while object is in edit mode

location: <unknown location>:-1