Please post here to report bugs next time Immortalis Bug Reports
Also I understand your pain I use an iPod and Immortalis crashes whenever it feels like it.
Having information when it crashes most often will be very helpful to the GMs, thank you.
A few things I've tried that have helped a bit is not play with the iPod plugged in, unless it's low on battery. Also I close ALL the other opened/running programs when playing Immortalis.