I thought this was a one off thing, but this is the second game in a row where I can no longer trade any of my stuff except BCs to the Iridium.
My last and current games are godlike (suicidal), no mods, vanilla races. I'm playing a custom race on my current game, trying to get the Steam achievement that didn't work the last time. My last game was played as vanilla Krynn.
My last game was 1.12 and my current one is 1.2.
In both games, I was able to trade with the Iridium and then my options just disappeared. I don't know if this is something to do with the Iridium or if it's a bug. I can trade techs or whatnot with the other races.
Here's a screenie...
