GS 2.1 game frozen

[Cunctator65]

I copy here what I already wrote in the general discussion section (it seems more appropriate here):
I'm in the middle of a beautiful game (May 1942) and it is axis (AI) turn.
The game halted and it is frozen after axis has done (I think) all its attacks.
What can I do?
Reloading the autosave does not resolve the problem.
I attach my save file.
Please help
C.

P.s.: my specs:
OS: MS Windows Vista basic 32 bit SP2
PC: Intel Core 2 Duo E8500 @ 3.16GHz
RAM: 4.0 GB double channel DDR2 @ 399 MHz
motherboard: ASUSTeK Computer INC. P5Q-PRO (LGA 775)
Graphics: SyncMaster (1280x1024@60Hz)
1024 MBGeForce GTX 285 (ASUStek Computer Inc)