Typo in /usr/lib/catalyst2/modules/catalyst_support.py In function 'read_makeconf', line 639. The string: raise CatalystError, "Could not open make.conf file "+myspecfile must be changed to: raise CatalystError, "Could not open make.conf file "+mymakeconffile
Fixed in 2.0_rc45 now in portage. Thanks for the bug report.