[1.5.5]Couldn't load game

[nu23208]

check log:
d["combat_mindspeed"]=1
d["default_transmo_source"]=loadObject('mod.class.Object-0x22c0cc00')
d["mana_regen"]=0
d["fov_last_turn"]=875763
d["unused_talents_types"]=4

return d [string "d={}..."]:359434: main function has more than 65536 constants
Lua Error: /engine/class.lua:470: bad argument #1 to 'setfenv' (number expected, got nil)
At [C]:-1
At [C]:-1 setfenv
At /engine/class.lua:470 deserialize
At /engine/class.lua:488 load
At /engine/Savefile.lua:462 loadObject
At [string "d={}..."]:1587 deserialize
At /engine/class.lua:488 load
At /engine/Savefile.lua:462 loadReal
At /engine/Savefile.lua:544 loadGame
At /engine/Module.lua:1049 instanciate
At /engine/utils.lua:2243 showMainMenu
At /engine/init.lua:172
At [C]:-1 dofile
At /loader/init.lua:217