Recheck your lenses. As Brian mentioned AIS lenses don't have contacts and are manual focus only. Also on a D90 they wouldn't have metering since they don't have a CPU. One clue here is the 60mm AIS lens in your profile equipment list. Nikon never made a 60mm AIS manual focus lens. It must be the AF 60mm f2.8 lens but maybe is the non-D version. Do these lenses all auto focus on your D300?