Could you PM me your Private Feed Key so that I can troubleshoot? When I test my own it works, so there must be something specific to your account that's triggering the error.
PM send.
What Archetype were you seeing that with?
I've made a list:
Blaster - 2x Beam Rifle
Brute - 2x Street Justice
Controller - 2x Time Manipulation
Corrupter - 2x Time Manipulation
Defender - 2x Time Manipulation + 2x Beam Rifle
Mastermind - 2x Time Manipulation
Scrapper - 2x Street Fighting (Justice?)
Stalker - 2x Street Justice
Tanker - 2x Street Justice