I'm playing Late Era Campaign with Crusader States. At certain point game just crashed. I tried to launch again my savefile then autosave but it crashed every time. Here is the systemlog:

17:16:33.846 [system.rpt] [always] CPU: SSE2
17:16:33.846 [system.rpt] [always] ==== system log start, build date: Feb 25 2008 version development ===
17:16:33.850 [system.io] [always] mounted pack packs/data_0.pack
17:16:33.850 [system.io] [always] mounted pack packs/data_1.pack
17:16:33.851 [system.io] [always] mounted pack packs/data_2.pack
17:16:33.853 [system.io] [always] mounted pack packs/data_3.pack
17:16:33.853 [system.io] [always] mounted pack packs/data_4.pack
17:16:33.853 [system.io] [always] mounted pack packs/localized.pack
17:16:52.925 [system.rpt] [error] Medieval 2: Total War encountered an unspecified error and will now exit.

Can anyone help me to fix this pls i really want to finish this campaign?