If you get the error message "This copy is busy. Please try again Later" when launching ClarisWorks, it is likely that you are experiencing an Extension conflict. We have found that a screen saver called "QT Sunset," part of the Quick Tools set of Extensions, causes the conflict that produces the error message.
To fix this issue you need to remove the QT Sunset Control Panel from the Control Panels folder in your System Folder and restart your Macintosh. Also, please note that all Control Panels that start with the letters "QT" may be questionable.
Simply turning off the QT Sunset Control Panel may not eliminate the conflict. The QT Sunset control panel must be taken out of the Control Panels folder completely.
This issue has also been reported using LabelSecrets from Mac Secrets.