Afforess
The White Wizard
There seems to be some minor bugs in the Advanced Diplomacy package: i get multiple "TradeUtil - unknown Type 18" on embassy trades and an "... Type 6" for a right of passage agreement just after the diplomacy screen closes.
There's also another issue: sometimes other civs contact me but they don't want anything. The diplomacy screen just opens on the start as if i had contacted them. but i can't say if this is a problem with your mod or RoM itself.
Both are known bugs. See the OP for a full list of known bugs 1.53