Error indicating your serial number is invalid or Error 20 when launching Corel Painter 12 after upgrading to a newer version of Mac (OS) X, including Mavericks

You may receive an error indicating your serial number is invalid or Error 20 when launching Corel® Painter™ 12 after upgrading to a newer version of Mac (OS) X, including Mavericks

This issue is most likely caused by incorrect permissions created on key system folders during migration to a new version of Mac OS X causing issues with the activation of Painter 12.

METHOD 1

1. From the Finder, click on the Go menu and select Go to Folder
2. Type /System/Library/CoreServices and click Go
3. Open the Directory Utility
4. From the Directory Utility, click the  icon to unlock the settings and enter your password
5. Then go to the Edit menu and select Enable Root User
6. You will now be prompted to create a password for the Root user, do not lose this password
7. Leave the Directory Utility running and open a new Finder window
8. Click on the Go menu and select Go to Folder
9. Type /Library/
10. Now Right-Click (or control-Click if you are using a MacBook) the Preferences folder
11. Choose Get Info
12. Click the  beside Sharing & Permissions at the bottom of the Info window
13. Click the  Icon and enter your password to unlock the settings
14. Change the permissions for Everyone to Read & Write
15. Click the  and choose Apply to enclosed items…
16. Leave the Preferences Info window open and launch Painter 12
17. You may be prompted to re-enter your serial number and re-activate Painter 12
18. Once Painter 12 has launched successfully, return to the Preferences Info window
19. Revert the permissions for Everyone back to Read only
20. Click the  and choose Apply to enclosed items… and close the Preferences Info
21. Return to the Directory Utility
22. Click the Edit menu and select Disable Root User

METHOD 2

This method requires use of the Terminal and sudo command, you must have a password on your computer account in order to use sudo.

1. Go to your Launchpad or Applications folder
2. Go in Utilities
3. Open the Terminal
4. Type in the following command and press enter (the command is case sensitive)

sudo /Applications/Corel\ Painter\ 12/Corel\ Painter\ 12.app/Contents/MacOS/Corel\ Painter\ 12

1. Enter your password and press enter
2. Painter 12 should launch and may prompt you to re-enter your serial number and re-activate Painter 12