Client stucks at the "Building Terrain" screen, and the launcher log outputs this error (only appears on the event log, not on the log file). Only thing that can be done at that point is force-kill the java process.

Versions used:

• MC 1.12
• Forge 2387 (RB)
• IvToolkit 1.3.3
• RecComplex 1.4.3

Duplicate of #244.

Ahh, took a bit to submit and didn't notice that one... Sorry! :P

No problem, I'm glad it gets reported in the first place :)

(Updated the gist to one with only IVToolkit and RecComplex, since it seems to happen even with the two them alone)