BOM generator scripts could not be found

Description

The "Bill of Material" window shows two BOM generator scripts, both of which show "(file missing)". Clicking on one of the scripts shows the following message in the detail window:

The selected BOM generator script bom_csv_grouped_by_value.py could not be found.

Searched:
	/Users/chris/Documents/KiCad/5.99/plugins
	/Applications/KiCad/KiCad.app/Contents/plugins/

I was expecting these generator scripts to be found since it appears they are intended to be shipped with KiCad (this is a brand new install of 5.99 nightly, I didn't add these myself).

image

Steps to reproduce

  1. Open the schematic editor
  2. Click the "bom" button to open the "Bill of Material" window

KiCad Version

Application: KiCad

Version: (5.99.0-9520-ge465f2d19e), release build

Libraries:
	wxWidgets 3.0.4
	libcurl/7.64.1 SecureTransport (LibreSSL/2.8.3) zlib/1.2.11 nghttp2/1.41.0

Platform: macOS Version 10.16 (Build 20D74), 64 bit, Little endian, wxMac

Build Info:
	Date: Feb 28 2021 04:30:11
	wxWidgets: 3.0.4 (wchar_t,STL containers,compatible with 2.8)
	Boost: 1.75.0
	OCC: 7.5.0
	Curl: 7.54.0
	ngspice: 31
	Compiler: Clang 10.0.1 with C++ ABI 1002

Build settings:
	KICAD_SCRIPTING=ON
	KICAD_SCRIPTING_MODULES=ON
	KICAD_SCRIPTING_PYTHON3=OFF
	KICAD_SCRIPTING_WXPYTHON=ON
	KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
	KICAD_SCRIPTING_ACTION_MENU=ON
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON