In order to fix the issue, try uninstalling Roxio CinePlayer application (Control Panel > Uninstall a program). If you can't, try using Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, run AdwCleaner to make sure that there are no leftover registry keys or toolbars in your system and burn the PowerPoint presentations to DVD. If you still have issues, try using another burning utility from Software Informer database.