AmR with Register Plus Redux

I am using the above combination of plug-ins on my site. Although I have defined several custom fields within RRR, none of these are showing up in AmR. So, I have two questions:

Are they supposed to?

and, if so,

Does anyone know why they aren’t doing so?

i do notice that if I try to configure AmR, I get a warning message that says: “Possible fields not configured! default list being used. Please build complete nicenames list.” However, I don’t know what ‘nicenames’ are and I can’t find any reference to them by searching the WP Codex.
If anyone can offer any assistance, I should be very grateful.