Game Mechanics: Crafting. Can't combine

[Tallenn]

I'm getting an error: "You can't combine these items in this container type!"

Trying to combine Hematite and Enchanted Electrum bar in a Jeweler's kit. The exact same combination was working fine last night. I also tried turquoise and electrum, same deal. I also tried buying a new jeweler's kit. Same result. Just for kicks, I also tried an unenchanted bar, but no go.

There appears to have been some update, as all of the merchants inventories were emptied out of items sold to them by players. Whatever that update was, it screwed with jewelry making. I don't know about other tradeskills.