Got this error when have low and high poly models and hit BAKE, maybe I'm missing some options?..
File "C:\Users\Mike\AppData\Roaming\Blender Foundation\Blender\2.80\scripts\addons\TexTools-Blender-master\op_bake.py", line 73, in execute
ray_distance = bpy.context.scene.texToolsSettings.bake_ray_distance
File "C:\Users\Mike\AppData\Roaming\Blender Foundation\Blender\2.80\scripts\addons\TexTools-Blender-master\op_bake.py", line 159, in bake
image = setup_image(mode, name_texture, render_width, render_height, path, is_clear)
File "C:\Users\Mike\AppData\Roaming\Blender Foundation\Blender\2.80\scripts\addons\TexTools-Blender-master\op_bake.py", line 345, in setup_image
is_float_32 = bpy.context.preferences.addons["textools"].preferences.bake_32bit_float == '32'
KeyError: 'bpy_prop_collection[key]: key "textools" not found'