Modpack version
1.7.5b

Issue
This quest will not detect the Turbine Valve. crafting it manually, also craftign it from a AE system. I dropped the items and picked them up. I also relogged. No Change.

Logs
latest.log

Thanks, I'll have a look asap :)

I am also experiencing this issue in single-player. Enigmatica 2 version is 1.75b. I did run the "bq_admin default load" command.

NBT issue maybe? The valve has one NBT tag - {mekData:{security:0}}

Yep, like all the other Mekanism quest issues this one is caused by NBT :)

Cobble-Sulfur Quest has the same issue.

The issue you are experiencing has been fixed I believe, please run the command /bq_admin default load to reload your quests.
You need admin rights to run the command. If you're playing singleplayer and don't have cheats enabled, Open to LAN from the Esc menu, with cheats enabled.

No change, still does not work. I am playing on a server. I am hosting the server. Please let me know what to try next.