energy saver won't work in OSX 10.4.11

Hello, try this...

Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, then move these files to the Desktop.

(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

/Users/YourUserName/Library/Preferences/com.apple.systempreferences.plist

/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist

/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist

(Then Trash the original of these last two, as "moving" them only copies them.)

Then reboot once more.

Just asking, did you look for those in the Library folder at root of the Disk, not in /Users/YourUserName/Library/???

Is there a SystemConfiguration/ folder in there?

I'm not sure what to think, here's the contents of mine on a relatively bare install...

com.apple.airport.preferences.plist

com.apple.nat.plist

com.apple.PowerManagement.plist

NetworkInterfaces.plist

preferences.plist

Enable Internet Sharing in Sharing & see if this file shows up there...

com.apple.nat.plist

Hmmm, getting stranger all the time, If all the above fails, then it appears to be time for a relatively painless Archive & Install, which gives you a new/old OS, but can preserve all your files, pics, music, settings, etc., as long as you have plenty of free disk space and no Disk corruption, and is relatively quick & painless...

http://docs.info.apple.com/article.html?artnum=107120

Just be sure to select Preserve Users & Settings.

In my experience everything still runs, & if so just Trassh the Previous System folders to save a few GBs, then empty the trash. 🙂