To Reproduce
Steps to reproduce the crash:

1. Get into a world with both the latest Flan's Mod and MalisisCore installed.
2. Place any tank.
3. Load it with any compatible shell.
4. Fire the main gun (you may find that the shell will explode upon leaving the tank's barrel, which is another issue with the incompatibility; to avoid this, aim your gun higher).

After following these steps, the game should freeze around 4-5 seconds after firing the shell.

Screenshots
Not Applicable

Versions (please complete the following information)

• Forge: 1.12.2 build 2847
• Flan's Mod: 5.6.0 Beta 7

Crash Log
https://gist.github.com/CaveMiner1215/2ff569f6cc4ef65201532b9f9dfd7f4c

Additional context
When firing tank or aircraft guns while MalisisCore is installed, the game will freeze, requiring a forced shut down, producing a crash report detailing a StackOverflowError due to the ray tracing class(es).

Same issue as #1145

Hmm I see...it is indeed the same issue, and he/she had MalisisCore installed as well. Fortunately, the problem can now be narrowed down to a current incompatibility between Flan's Mod and MalisisCore.

Will this be fixed relatively soon?

Closing this. Details in #1145