ImgBurn v184.108.40.206 Released! in Announcements Posted October 17, 2011 BlackDex, Just got the bug report you sent and have fixed the crash issue when 'Optimise Duplicate Files' has been enabled. Ah.. nice, i had to use IsoMaster instead to create an ISO which optimizes duplicate files. The only thing i sometimes have trouble with is files which have the same name but different case, like "Backup" and "backup". On linux this isn't a problem also the Rock Ridge ISO format supports this, but most of the time this isn't a real problem. Would be nice if it were possible to rename or merge it just for the ISO creation, but that whould be hard to implement i think.