Can't access Facebook w my mac book pro (lion)

Question

and i fiddled with terminal (following instructions from the internet)  to fix it and probably made it worse. how do i fix this? when i try to open the page it says
Invalid URL
The requested URL "/", is invalid.
Reference #9.54e0fc7d.1343822724.68af19

Answer 1

Carolynpyrenees,
so when you rebooted from Single User mode, it didn’t show the Welcome video again? It went straight to the login screen, as it was behaving previously?
If it didn’t ask you for a password in either Step 1 or Step 2 above, then you don’t have FileVault activated. Here’s another possibility to try in Lion:
Boot into Single User mode again.
Enter the following commands, one per line:
/sbin/fsck -fy
/sbin/mount -uw /
/bin/launchctl load /System/Library/LaunchDaemons/com.apple.opendirectoryd.plist
/bin/ls /Users
/usr/bin/dscl . passwd /Users/username new_password
/sbin/reboot
The ls command will list all of the “home” folders for users on your computer, along with a Shared folder which isn’t associated with any user. If the only folder that that ls command shows is the Shared folder, then something has caused your original user to be deleted; skip the dscl command and just give the reboot command, skipping Steps 3 and 4.
Presuming that your original username is shown by the ls command, the dscl command will replace the original password for username with whichever new_password you choose. You might get a message from the dscl command about a file or directory not being found — that message can be ignored.
After rebooting, see if you can login normally as the username with the new_password.
If only the Shared folder was shown by the ls command in Step 2, then let me know in your reply and I’ll provide the commands that would be needed to create a new user in Single User mode.