I need to un-install InDesign CS6 then re-install it from my dvd. Simple steps to achieve this please on my iMac and El Capitan, Do I need to de-authorise first?
You can doownload an installer from here: Download Creative Suite 6 applications
Uninstall using the installer in the application folder but be prepared for problems. CS6 is unsupported under El Capitan. We've seen a substantial number of problems with it here and there will not be any updates to fix it.
Thanks for the info Bob, I have now re-installed InDesign and now everything is working well as is Illustrator and Photoshop