Modpack version
Version 1.74 Release

Issue
The Elite motor from Vulpes Library is no longer craft-able. The Dilithium crystals have disappeared from the recipe. In the version 1.72b the recipe worked and required the Dilithium Crystals. Issue was able to be temporarily resoled by downgrading both AdvancedRocketry and LibVulpes from:

• AdvancedRocketry-1.12.2-1.6.0-190-universal
• LibVulpes-1.12.2-0.4.2-69-universal
  to version:
• LibVulpes-1.12.2-0.4.0-56-universal
• AdvancedRocketry-1.12.2-1.5.0-139-universal

Logs
No logs or crash, however screenshots attached.
v1 72b working recipe

v1 74 recipe issue

v1 74 listed recipe

I'll get that fixed, thanks for the report :)