The file is indeed there, but I have no idea what's happened:
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/descr_terrain.txt
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/descr_terrain.txt
16:20:11.937 [system.io] [trace] file open,,12C78B70,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/descr_terrain.txt is missing
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_heights.hgt
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_heights.hgt
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_heights.tga
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_heights.tga
16:20:11.937 [system.io] [trace] file open,,13117D10,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/map_heights.tga is missing
16:20:11.937 [data.invalid] [error] Failed to open file 'mods/EBII/data/world/maps/base/map_heights.tga'
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_roughness.tga
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_roughness.tga
16:20:11.937 [system.io] [trace] file open,,12C78B70,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/map_roughness.tga is missing
16:20:11.937 [data.invalid] [error] Failed to open file 'mods/EBII/data/world/maps/base/map_roughness.tga'
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_climates.tga
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_climates.tga
16:20:11.937 [system.io] [trace] file open,,13117C40,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/map_climates.tga is missing
16:20:11.937 [data.invalid] [error] Failed to open file 'mods/EBII/data/world/maps/base/map_climates.tga'
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_ground_types.tga
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_ground_types.tga
16:20:11.937 [system.io] [trace] file open,,12C78B70,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/map_ground_types.tga is missing
16:20:11.937 [data.invalid] [error] Failed to open file 'mods/EBII/data/world/maps/base/map_ground_types.tga'
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_features.tga
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_features.tga
16:20:11.937 [system.io] [trace] file open,,13117C40,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/map_features.tga is missing
16:20:11.937 [data.invalid] [error] Failed to open file 'mods/EBII/data/world/maps/base/map_features.tga'
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/campaign/imperial_campaign/map_trade_routes.tga
16:20:11.937 [system.io] [info] exists: missing mods/EBII/data/world/maps/base/map_trade_routes.tga
16:20:11.937 [system.io] [trace] file open,,12C78B70,,not found
16:20:11.937 [system.io] [warning] open: mods/EBII/data/world/maps/base/map_trade_routes.tga is missing
16:20:11.937 [data.invalid] [error] Failed to open file 'mods/EBII/data/world/maps/base/map_trade_routes.tga'
16:20:11.953 [bink] [debug] [mods/EBII/data/fmv/menu/DUMP0000.BIK]Pause on
16:20:12.031 [system.rpt] [error] Unspecified error. Please compress your error log in a zip format and upload it on the EBII technical help forum.
Your map is indeed broken, though how I have no clue.