I have been playing MTW2 & Kingdoms for a while until I tried the unpacker last week. Since then the game crashed on battles so I reinstalled the games after deleting all files and registries. After yet another re-install I have got MTW2 Grand Campaign working perfectly but Kingdoms crashes after the campaign selection screen. My desktop appears to go to 16 colour before the error, but I dont understand if it graphics related since it runs the Grand Campaign. I have a Geforce 7800GS and I've tried 3 drivers including the one that came with the card.

Any ideas?