CTD upon starting siege battle

[Henry X]

So I reloaded the save game playing as the Holy Roman Empire and Hungary lays siege to Vienna. They initiate a battle and I click to play it. So the loading screen comes up and then I get the exception when it would look like its about to play. Here's the system log to all who are courteous enough to help me.

00:17:30.874 [system.rpt] [always] CPU: SSE2
00:17:30.875 [system.rpt] [always] ==== system log start, build date: Aug 3 2007 version bld-medieval2-kingdoms-104 (45562) ===
00:17:30.881 [system.io] [always] mounted pack packs/data_0.pack
00:17:30.882 [system.io] [always] mounted pack packs/data_1.pack
00:17:30.884 [system.io] [always] mounted pack packs/data_2.pack
00:17:30.886 [system.io] [always] mounted pack packs/data_3.pack
00:17:30.887 [system.io] [always] mounted pack packs/data_4.pack
00:17:30.887 [system.io] [always] mounted pack packs/localized.pack
00:22:47.092 [system.rpt] [error] Medieval 2: Total War encountered an unspecified error and will now exit.