Add me to that list. As far as I remember, LLBs were a great way to save VIs with filenames longer than the old 8.2 FAT16 limitation. Sure, they now also offer some compression too, but I think that there's not real point to using them anymore. If you want to group files together, then use something more accepted: put 'em in a zip. Hey - now there's an idea: LabVIEW being able to open VIs in zip files!