I like everything about Magix Movie Edit Pro 2015 EXCEPT for the actual burning part. I have version 14.0.0.183 and am working on Windows 8.1 and have posted my 2 most recent attempts: 1 to burn using MEP 2015 and 1 to Encode to Directory with the plan to do the actual burning with Imgburn. I didn't get very far.

10/8/2015 11:23:05 PM.150: setting no speed limit
10/8/2015 11:23:07 PM.942: AVSDK Message - ERROR: :Cannot get device/media specific information -> functionality is not provided by device or by system
10/8/2015 11:23:15 PM.922: AVSDK Message - ERROR: :Cannot get device/media specific information -> functionality is not provided by device or by system
10/8/2015 11:23:18 PM.184: AVSDK Message - ERROR: :Cannot get device/media specific information -> functionality is not provided by device or by system
10/8/2015 11:23:18 PM.223: Open Project: Project_1 -- bd project 2015-10-08
10/8/2015 11:23:18 PM.225: VideoMode: NTSC Temp Dir: C:\Users\DougG\Documents\MAGIX\Movie Edit Pro 2015\Disc Images\
10/8/2015 11:23:18 PM.226: dll version 5.0.10.0
10/8/2015 11:23:18 PM.279: Step 1 of 10, Encoding movie 1 ...
10/8/2015 11:23:18 PM.476: Step 1 done
10/8/2015 11:23:18 PM.480: ERROR: PrepareDVDVideoFiles() failed with errNo 5 - encoding failed
10/8/2015 11:23:18 PM.481: !!! DBK error in BurnProject: 10 - movie encoding failed !!!
10/8/2015 11:23:44 PM.898: Open Project: Project_1 -- bd project 2015-10-08
10/8/2015 11:23:44 PM.899: VideoMode: NTSC Temp Dir: C:\Users\DougG\Videos\
10/8/2015 11:23:44 PM.900: dll version 5.0.10.0
10/8/2015 11:23:44 PM.907: Step 1 of 9, Encoding movie 1 ...
10/8/2015 11:23:45 PM.027: Step 1 done
10/8/2015 11:23:45 PM.030: ERROR: PrepareDVDVideoFiles() failed with errNo 5 - encoding failed
10/8/2015 11:23:45 PM.031: !!! DBK error in BurnProject: 10 - movie encoding failed !!!

I had this issue a couple days ago and tried uninstalling and reinstalling. Didn't make much difference.