This was a bug in previous versions of ISR, and has been fixed. The workaround for this can be achieved through the following procedure:
1. Exit from ISR if it is open.
2. Go to the "My Computer" icon and select "Search..." or "Find...". The command name varies in the menu based on the OS you are running.
3. Search for the file cydev.bpf.
4. Delete the files found.
5. Re-run the ISR program.
Please be noted our entire Cypress CPLD product are Obsolete and not recommended for new design and development. For more information on CPLD product, please visit our webpage: http://www.cypress.com/go/cpld