For what its worth... I open ImgBurn, click "Write Files/Folders to Disc, click the options tab to be sure its set to UDF File system and Revision 2.50. Then I just drag the whole folder (ie D:\BD-R_Workfolder\LIVE_AND_LET_DIE) into ImgBurn... Click the label tab and type in the name of the movie, Lastly, click on build... I usually burn to BD-RE first, then come back and burn to a regular BD-R disc, but I do it less and less as I get more confident that the results will be ok.