Chris Muller uploaded a new version of Installer-Core to project The Trunk:
http://source.squeak.org/trunk/Installer-Core-cmm.400.mcz

==================== Summary ====================

Name: Installer-Core-cmm.400
Author: cmm
Time: 25 August 2015, 11:06:20.165 am
UUID: 28706d1b-7c7a-46f9-be11-a9abdf855614
Ancestors: Installer-Core-cmm.399

Original squeaksource.com does not allow dash characters in project id's.

=============== Diff against Installer-Core-cmm.399 ===============

Item was changed:
  ----- Method: Installer>>maInstaller (in category 'package-definitions') -----
  maInstaller
  	"Select from a family of related packages for application development."
+ 	^ { #ss -> 'MaInstaller'.
- 	^ { #ss -> 'Ma-Installer'.
  	'Ma-Installer-Core' }!