How does one go about fixing these errors?
Yes, cdanteek suggested that to me as well. However, when I looked, there is no option to activate Blu-Ray authoring in 'Help', in either the MyDVD application or the main program itself. I tried doing a search in 'Help' (in both the main program and the MyDVD app) for Blu-Ray authoring but all I got was something on copying discs. Nothing on authoring. I have contacted Roxio support but the steps they suggested have not corrected the problem either.