Error Message "Cannot Start More Than One Copy of Application"

This information was provided by Claris Corporation on 16 March 1998, and incorporated into Apple Computer's Tech Info Library.
If you attempt to install an application and get the error message "You cannot start more than one copy of specified program" check the Windows task list. You can do this by minimizing Program Manager and double clicking on the desktop to see what applications are running. If Windows "Setup" is running you can get the error. Exit Windows Setup and restart the Claris installation process.
Published Date: Feb 18, 2012