Your crash happens because the Tile Entity was saved with a different NBT dataset than the one you are attempting to load it with
More to the point, your save file is prior to the Short overflow bugfix, and the one you tried to load was after. Yes, they are incompatible. Sorry.
I'm pushing a fix to that particular issue.
I welcome immibis offering an actual rewrite of this mod. The (just recently fixed) ghost TileEntity bug, and basically every single other bug i have fixed, were pretty much all stuff i missed when fixing Zippinuis source up. It should have had a clean re-code, given the code state. But i didn't want to put in the considerable effort. Just making it work was hard enough back then.