Just lost workforce computer and am using a spare running Windows 8.1 I am running as an Administrator. Downloaded latest ver DVDFAB9. Upon trying to back up a copy DVDFAB starts recognizes disk, analyses and copies fine, then when it comes time to dupe the disk the best I gat is 62% before it fails with the following message in a box titled Disk Format. " You do not have sufficient rights to perform this operation". Sometimes the message comes on but the attempt to copy goes til 62%. Searched for a cause and 90% pertained to formatting a hard disk. The ones that referenced dvd's gave a solution to run as administrator. I doubt its dvdfab, this is my first time running win 8 so frankly I'm lost. Any help would be appreciated. I apologize for being wordy and realize this post probably doesn't belong here but I am looking for help. Thanks for any assistance.