OK, I got it used, but still.
Anyway it's the 80-200 they still make today. Not the push-pull or the AFS version.
So I'm following the proper instructions and setting the aperture at ƒ/22 and hitting the lock switch. My D300 is set up so I control aperture through the sub-command-dial, not through the aperture ring. However, I am getting the error FEE!
I put it on my D70 and it works fine with the aperture locked at ƒ/22! How come it ain't workin' on my '300!?
Thanks ahead for your help everyone.