Sorry, I just re-read the OP and see where it says you tried it "with and without a [flight] plan loaded".
If you've got a FP loaded but you're still not seeing the Real Plan option, then I'm not sure what's going on...no one's reported that behavior before. If that's really happening, I'd suggest replicating the behavior and submitting a bug report, perhaps also with a screen shot showing the FP and the stunted "More Options" menu.