I have just received the attached stack trace while trying to craft an iron tool forge I had the seared bricks in the crafting station along with the tool station and went to put the iron blocks in and my screen went blank. The last 4 lines are repeated over and over. Have not tried to replicate as the world I was using is now caught in this loop.

Crash Dump.txt

Edit: Managed to replicate the crash in a new world

Edit 2: After trying several times it appears if you place the 3 seared bricks in the crafting station then try and put in the tool station it is at this point it crashes also.

Do you think you can give us the crash report from the "crash-reports" folder?

Certainly
Mantle Crash - 31-03-16.txt

SlimeKnights/TinkersConstruct#1988