Hi Brundle. OS is XP home, 2006 Norton, and the application is Photoshop v7. I clicked 'no' when deleting some of the files because I thought they were being used by another app. I've run Wincleaner, and I cant find any associated files. I know the disc is OK, as it loaded onto a laptop without problems. I'll have a go at jimv7's cleaner and see what happens. Thanks both for troubling to reply.
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