Symptom
When installing software, you see an alert with a message stating that there has been an error due to permissions or privileges.
Solution
1. Choose System Preferences from the Apple menu.
2. Click Users.
3. Select your Admin user.
4. Click Edit User.
5. Create a new password that does not contain spaces.
6. Click OK.
Important: In addition to spaces, certain characters may produce unexpected results when used in a password. Generally, these characters are those you type with the Option key.