The game tells me that Im missing the tech Gamma Absorpation for the antimatter, but that is not the case.

Game ver. 1.052 S5 Gold-Public

Save file: Unfallen 2.zip

pictures:

I had same issue with adamanteum. It was in a game I'd traded to get the tech. 

I had this issue with both Adamanteum and antimater. Vesion 1.0.11.

Before this happened the queue for technologies was behaving strangely. I had 4 technologies queued but it wasn't saying the right technology wuth turns left icon on the top left corner overview page, but a technology that wasn't yet on queue.

i had this glich on one of my saves geo industry plants seems to updated(planet upgrade) by adamatan tech but resourse exploitation does not work for both. Need a good fix for this

I have the same problem here with adamantian: 

bug.zip

I had queued crust engineering with applied cryogenics and I think I have never had the popup saying that crust engineering had finished.

Crust engineering also did not show on the top left corner of the screen, it was applied cryogenics that was displayed.

Version 1.0.11 S5 GOLD-public