Unable to save game if patches are also unpacked

[roginvs]

I unpacked critter.dat, master.dat, and patch001.dat. When data is unpacked I am not able to save game.

As I understand the game creates temp file under patch001.dat/... path inside _proto_save_pid function and then tries to copy it from master.dat/... location in the _GameMap2Slot function.

This can be reproduced using Fallout Nevada Engish version and also with Fallout Sonora with DLC. Download game and unpack *.dat files using dat-unpacker to reproduce.

Original game works fine. Also fallout2-ce works fine if game is loaded from save so it fails only when new game is started

As workaround can I copy data from patch001.dat/ and patch002.dat/ into master.dat/critter.dat? Am i right that everything should go into master.dat/ except */art/critters/ ?