crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

Sounds like you may have used a patcher to try to upgrade your system.  If you have appleacpiplatform kext in your usb extensions folder, remove it, the installer should l boot normally.

crwdns2915684:0crwdne2915684:0:

open