How 'bout try a different approach. Compile without the "add original pictures" option. Use Imgburn to burn using Build mode, selecting the root folder that contains both VIDEO_TS and original picture folders. Make sure there is enough space on the target media by looking at the Information tab on the right.

e.g. You have
C:\SLIDESHOW

C:\SLIDESHOW\VIDEO_TS
C:\SLIDESHOW\ORIGPICS

Choose SLIDESHOW folder.