Addon 'FGN_AAF_Air' requires addon 'rhssaf.main'

[Watts 1615]

Anyone -
Just loaded the required mods to schedule training. Upon starting ARMA, I received the following error message:
"Addon 'FGN_AAF_Air' requires addon 'rhssaf.main'" Have never received this message before loading the mods.
Anyone experience this or have suggestions?

Best,
Watts