it is possible to choose the course-data-directory as location for images when adding a new lightbox. When you then backup the course with this lightboxgallery all folders are copied to the root/temp directory to make the zip-file also the moddata and backup folder (which are excluded in the code for backing up course-data-folders ) . When you then restore this course there are a lot of .info - files xml-files and all the group, user etc folders from the restore-process in the data-directory because the zip-files in the backup-directory are also unzipped.
solution: Please avoid/prohibit that a user can choose the root of the data directory while installing a new instance of the lightbox-gallery Module

It doesn't affect the above mentioned Component but there is no possibility of choosing Course/backup-restore