So I have used Corel for many years, it might be worth checking the post script level is level 3 in the EPs export dialogue box. I think earlier versions of Corel also installed "ghostscript" to manage EPS files, it may be worth checking this is installed correctly too. Have you also tried holding F8 when you start Corel? This should reset it to factory defaults. I doubt this will help as you say you have uninstalled and reinstalled but perhaps some settings are not completely removed during the uninstall process so may be worth a try! Apologies if some of this not correct / relevant, its difficult to remember all the settings etc. going back to X4