Grimrock

=== Software Failure ===

corrupted or incomplete data (Z_DATA_ERROR)
stack traceback:
[C]: in function 'error'
[string "Dungeon.lua"]: in function 'loadInitFile'
[string "GameMode.lua"]: in function 'loadDungeon'
[string "GameMode.lua"]: in function 'newGame'
[string "GameMode.lua"]: in function 'update'
[string "Grimrock.lua"]: in function 'display'
[string "Grimrock.lua"]: in main chunk

I get this when trying to play Mods maps etc can some one tell me what is happing please

Trying to play Eye of the Beholder and Back into the Dungeon.dat ! they will not play im sooo diapointed and need them to work

Make sure you are running the latest version of LoG.
The version number is displayed in the bottom left corner of the main menu and should be 1.3.7.
Patches for manual application are located here. (Steam usually takes care of this automatically)