Bopper posted this thread on the Homecoming forums a couple of years ago (and yes, I participated in it back in the day).
Interface Procs are Bugged...my Test Results might show why (https://forums.homecomingservers.com/topic/15278-interface-procs-are-buggedmy-test-results-might-show-why/)
You can see that Number Six (a HC dev) drops in on the conversation pretty quickly and identifies the coding problem (and the probable copy/paste hackery that caused it in the first place).
Leaving this here as a follow up to mention of the problem for brw316, as promised.