According to a posting at The Internet Nirvana Fan Club, legendary NIRVANA producer Jack Endino talks in his latest newsletter about working on the NIRVANA "With the Lights Out" box set and explains why the fabled FECAL MATTER (Kurt Cobain's pre-NIRVANA outfit) demo was not included (you guessed it — Courtney Love): "This past summer, we got word that the box set was going to happen, yes, really truly this time. Having been semi-officially researching material for the box with co-conspirator Gillian Gaar since 1998, it was hard to believe it, but sure enough, the starting gun was fired, and it became a frenzy to make sure we had the best sources, and the correct credits and dates. A deadline crunch happened at the end, with Silva Artist Management (for Krist and Dave) and Courtney's people (Peter Asher, for Sanctuary) trying to agree on a final track listing for the box set, as the deadline for the booklet art and layout got nearer. That's why there's a picture of the FECAL MATTER cassette in the booklet, but no music from it; Courtney's people decided that it was not really 'NIRVANA' (i.e. it's Kurt and Dale only, so why share it with Nirvana LLC?) and held it back at the last minute, which is why the set starts with 'Heartbreaker', which would not have been my choice. At the VERY last minute, Silva Mgmt got access to a trove of 'Kurt cassettes' that Courtney has been talking about for years. That's where 'Mrs. Butterworth' and a few other things on the box (mostly acoustic stuff) came from, literally out of the blue in the final weeks of preparation for the box."
Endino notes that Dale Crover is most likely not the drummer on "Mrs. Butterworth" and that, unlike what it says in the booklet, it was probably recorded in 1987. Finally, Endino speculates that future releases will be complete concert recordings as the box includes most of the non-live rarities, outtakes and demos available.