loaded libraries, missing library parts

[Patrick M]

we have updated our template to the .libpacks... a kid at the firm saved a .pln to his desktop, worked on it over the weekend, and uploaded it to the server this morning.

all library packs are loaded to the library manager, but content from the local version of them to the server version does not translate through. anything I'm missing?
(I swear these library packs have been nothing but trouble. I love that we have the INT doors and windows now, but it hardly seems worth it for all the headaches this 'transition' has caused!)

flat skylight placed in pln, missing in teamwork file

flat skylight is definitely in the loaded libraries

library manager example: objects missing from Plumbing fixtures and bathroom.libpack - plumbing fixtures and bathroom.libpack is in the library manager and not reporting 0mb.

 I also verified this was not a one off local data corruption. The designer who reported this, I had him clear his local data and re-join. I joined the file, and see an identical set of missing library parts.

Operating system used: Windows