I have the latest versions of Oxide & the Rust, have checked this in VS, and various on-line resources without finding any sesolution. 

I Have the latest Oxide developer files on my development PC as well but am still getting this error on my gPortal server...

[Error] Error while compiling: BradleyGuards.cs(454,34): error CS1501: No overload for method `Init' takes `14' arguments

npc.Brain.Navigator.Init(npc, npc.Brain.Navigator.Agent);

Probably something in the latest release of Rust that oxide hasn't caught up with it yet.

ThanX!