You will have to be more specific. Please tell us when exactly the crash happens. Would be perfect if you could provide a screenshot of an error that you get when it crashes or a traceback/log file. I think "log.txt" and "traceback.txt" should be located in "Documents/Ixalon/com.caribdis.eternum" folder
Common issues that might happen:
- If you have other mods installed they can interfere which can lead to all sorts of problems. Solution: remove other mods
- You have older version of Eternum. Mod is developed with 0.7.5 (0.7 on Android) and was not tested on older versions. Solution: update the game
- You are trying to load a save file. Android has issues with saves compatibility, you can see some info about it in README. Some saves will work, some won't. Try loading another save or starting a new game