Description of the Bug**
if you place liquid and solid fireboxes and complete the multi block it crashes minecraft and crashes when you try to rejoin the world (if you are looking to duplicate i suggest doing it in a fresh world as i have lost access to one of my worlds because of this bug)

To Reproduce
build a steam boiler multi block structure like you normally would but replace one of the solid/liquid fireboxes with the opposite type this intern crashes the game and ive been able to duplicate it several times

Expected behavior
i honestly expected the structure not to form but instead it crashed my game

Screenshots & Video
apologies i don't know what i could put here to help

Logs & Environment
https://github.com/dawnbraker2/crash-report
https://github.com/dawnbraker2/log

Additional context
i do have buildcraft and industrialcraft2 installed but i believe
i also would like to ask if there is a way to fix the world i was using when i found this bug** found way to disable boilers and fixed problem

Duplicate of #1797

For your final question only:

You can try setting B:removeErroringTileEntities to true in forge.cfg and see if that gives you any joy in recovering your world.

For your final question only:

You can try setting B:removeErroringTileEntities to true in forge.cfg and see if that gives you any joy in recovering your world.

Actually I found a way to disable boilers very shortly after and got my world back thank you though I'll keep that in mind in case I run into any similar problems in the future