I'm not sure it's known, but theres this bug that happens if you modify a classic character on GoMule while it's on Nightmare dificulty, take this save i attached for instance, whem hes on nm and you delete something from his items or even pickup and drop again at the same grid slot it breaks the save file: can't load again either on D2R 2.7 or GoMule R0.44 (4.4.20-BETA) - changes start to show after . I already checked for the expansion exclusive flags on the save if that was the problem, now that i mentioned, if that was the case it would break on normal just aswell - which does not happen! If you load that same file on a normal game with the client and save/quit then you can manipulate his inventory on GoMule, save everything and it's all fine.
Classic Character: one created on D2R to play pre-expansion content (up to act IV) - just to be clear.
I have the same symptoms (also on classic) but I haven't even reached Nightmare yet.
It happens when character gains mercenary. Gomule tries to save merc items, but classic character has no merc items, so save gets some bytes overwritten and become corrupted.
Last edit: TheDudeSource 2026-05-21