Thank you, I can already see what is happening, so you won't need to test further...i'll see what can be done to fix it but so everyone knows, the id extension does not seem to be working so any potion id's over 128 are broken.tested the sigils:
Sigil of Whirlwind (effect ID: -113)
Sigil of Hast (effect ID: -125)
these crash the game.
testing the blood magic potions will take a little while longer^^
Try in the same brewcraft config changing "Potion List Extension Size"= to 128 and let me know how that works