HIya, I don't know if you have had this reported, sorry if you have:
I get this error (client side only, crashes client but no errors on server console) when trying to shift -click an item or block (any) into a Destructopack:
mc 1.4.2, forge 126.96.36.1990
thanks for the mod
tried it again with forge 188.8.131.524 and a fresh download as per the op. same error.