my mac won't start up after trying to replace permissions plist file
For no reason that I could figure out, my iMac running Yosemite would not let me log in as an administer (I am the only user on the machine). The dialog box got stuck on "Authenticating..." So I tried to delete the ~/Library/Permissions/...plist file. Now I am unable to restart my computer even in "Safe" mode.
Any suggestions about how I might be able to get my computer to start up again?
iMac, Mac OS X (10.4.9)