Hi,
I'm getting the following ambiguous recipe error on game loading:
http://pastebin.com/ZJQvd084
This happens with the released Beta 908 and all newer builds on the Jenkins server.

OK, I found the reason.
It is another add-on to IC2, the Iridium Mod, that adds Iridium Ore to the Worldgen and also to the IC2 recipes.
Maybe you have changed something there, because it works with Techreborn Build 879.

Does it just happen with Techreborn and ic2?

It looks like another mod is adding this recipe.

The thing is that mod does every that we do.

Mind sending me a link to that mod?

Here is it:
http://forum.industrial-craft.net/index.php?page=Thread&threadID=10700

Just a question: Might it be possible that you have changed the output amount for the recipe
[[1xgt.blockores@84, 1xtile.oreIridium@0, 1xtile.techreborn.ore@1] -> [2xitem.techreborn.crushedore@8]]
from 1xitem.techreborn.crushedore@8 to 2xitem.techreborn.crushedore@8?
I did a test where I added the Iridium Mod as the last mod and then I got that ambiguous recipe:
[[1xtile.oreIridium@0] -> [1xitem.crushedIridium@0]]
So I assume that you have changed the output amount and that causes that issue now.

why are u using that mod we add Iridium ore to world gen already ??

That mod is not compatible as we do everything it does.