virtualbox-ose-additions-4.3.16 - module doesn't load, service doesn't start

[Mike Harding]

I tried this on a 9.3 and 10.0 client, with all options unchecked (no X on
these virt. servers).

kmod doesn't load - it spits out
link_elf_obj: symbol RTTermRegisterCallback undefined
linker_load_file: Unsupported file type

Attempting to start the service:
VBoxService: error: VbgIR3Init failed with rc=VER_FILE_NOT_FOUND

Let me know if I can provide details, but I got this to happen on a generic
9.3 and 10.0 client, with only the -additions package installed from source.

Mike H.