Does not preserve schepisi (Call of Duty: Modern Warfare 3)

In General, there is a bug , and then just do game crashes when auto-saving mission that comes immediately after the screen saver code at the time when we join the group.
The mistake here is this: SaveDevice_PC - TempSaveGame: cannot open file for saving.
Windows Xp
1 GB RAM
256 vidyuhi
A free place on the disk almost 10 gigabytes.
What is most interesting, the problem arises as litsuhe and pirates.
COD MW2 and COD MW before this runs without any problems.
Help solve the problem at least autosaves, can someone faced with something similar?