Re: Mods saved to an external hard drive crash whenever i try to play a battle
The placement of the save file should not play a role, although it may be preferable if it is in the same directory structure as the mod itself. If the mod starts that means there is no loading\save file issue. If the mod then crashes during game play then it's an issue with the mod set up\files.
There is one fairly common reason why battles crash: if the game is unpacked and the two descr_geography files remain in the game's data directory. Do check if that is the case in your set up.