When trying to change file permissions in a Finder Get Info window, the
Finder itself may restart after the "+" button is clicked.
This issue can affect accounts that were migrated from Mac OS X 10.4 Tiger.
sudo dscl . create /Groups/username GroupMembership username
sudo dscl . change /Groups/username RecordName username _username
Replace the italicized "username" with your account username (which is also the name of the user's Home folder, in the Users folder). Remember to include the
underscore "_" before your user name in the second command.
If you have more than one account on the computer affected by this issue, you should run these two commands again for each account, substituting with the appropriate user name each time.
This document will be updated as more information becomes available.