
Originally Posted by
Kull
Pretty sure we know what's causing this bug (although your save game file would allow us to confirm it). The crossing between Scotland and Ireland has a "landbridge" (the blue wavy lines) but the tiles are also close enough that units can cross without the landbridge (similar to the Hellespont/Dardanelles crossing). Apparently this redundancy is what's confusing the rebel unit, leading to the "perpetual motion" problem.
Fortunately, this bug can be fixed and it will even work with ongoing campaigns. You need a graphics program such as GIMP, which you will use to open the mods\EBII\data\world\maps\base\map_features.tga file. It's an odd looking file full of colored lines and dots, but up in the top left of the file you'll see a short green line, which is 4 pixels long (there are two other green lines near each other and farther to the right, but don't touch those). Change all 4 pixels to the same black background as the rest of the file, and then save/overwrite. Next, delete the mods\EBII\data\world\maps\base\map.rwm file and then load up your save game. It will take a bit longer than normal as the game has to regenerate the map.rwm file, but once it loads, the landbridge will be gone and with it (we think) the perpetual motion.