As you can see here:
https://imgur.com/O2Vf7xK
this line tries to index a nil and forces me to disable the mod:
data.raw.technology[util.titanium_processing].prerequisites = {"lubricant"}

I also made german translations for Lead, Silicium and Titanium which you can download here:
https://drive.google.com/drive/folders/0BxWizfn0jOz0c0NfY2pHWXBrUms

Hello, and thank you for the translations! I will incorporate them shortly.

Thanks also for the bug report. For compatibility, to make sure Titanium works well after I fix it, can you let me know what mods you are using? (savegame is fine too)

I've added the translations in the newest releases for each. I'll look more into the bug tomorrow.

I just wanted to start a new game so theres no savegame atm.

I've tested different combinations and quickly found that it seems to conflict with angelssmelting 0.6.14

There is a global override in \prototypes which looks suspicious. Your Titanium mod is coded different from your other two mods.
I haven't started a game yet to test if your Mods even work with Angels bc Angels already provide Lead, Silicium and Titanium.

I've fixed the issue. With AngelBob's it still won't do much.

If you use just Angel's Smelting (and it's requirements) with Titanium, it'll use basic Titanium functionality.