Err...
Actually, I think this is not true. I have often used RegisterLibrary in the studio to register libraries that were not yet available and to test them... yet, the StarterScript had called LibraryRegistrationComplete. So I don't think this is true. --JulienDethurens 23:21, 27 March 2012 (EDT)
- LoadLibrary and LoadRobloxLibrary wait for LibraryRegistrationComplete, in the event that either are called before the library it wants to load has been registered. --Anaminus 13:51, 28 March 2012 (EDT)