trying to save my latest doohickie and it does save but i cant load it for the reasons above
im confused because it was made in the current version of the game 2 minutes ago and i haven't changed mods at all and i dont know what deserialization is
the issue is prominent over all of my saved contraptions
i found them on a certain Silverstone based racing circuit (not on the circuit itself but more in the gravel of the stands) and they're so pretty i have to know how they're made. Silverstone circuit has several factories which made me think its an industrial bi-product of sorts.
the closest lookalike to these stones is a "Leland blue slag" which is a biproduct of iron smelting, so i assumed that's what these must be but Silverstone doesn't smelt iron leaving me stumped as to what they could possibly be.
i have found several of these rocks but i gave them to friends and they all have the same features
do note that there are some patches of rusted iron on these rocks surfaces so it could actually be blue slag but then i ask the question how did they get here