AutoCAD LT Alert: The directory may be locked by another process or have been set to Read Only

Here is an interesting error message when launching AutoCAD LT 2013 for Mac:

AutoCAD LT Alert The directory may be locked by another process or have been set to Read Only

In this case, we tried to fix permissions of Mac OS X on the computer by using Disk Utility but that didn't work.

To solve the problem, we needed to add Read & Write permissions to the /Users/users folder to get AutoCAD LT to work.

1. Highlight the /Users/user folder (or name of the user account that is having the problem).  In this case, the user account was called: user.

2. Right Mouse click on the folder and select > Get Info.

3. Change the permissions to Read & Write for all user types.

Thanks to Stephanie E for confirming that this solution worked.