I had to uninstall this program a couple of months ago. Tried reinstalling it, but it keeps trying to install on my "internal memory" which is only 191.8MB so of course there isn't enough space for the map itself. I have plenty of room on my internal card, or on the external card.
This worked before I uninstalled it, even though my partitions were exactly the same as they are now.
I've been trying to figure this out on my own for a month before I gave in and posted, including looking for posts from others who have had the same issue (anywhere on the 'net, not just here).
I guess I'll have to start from scratch with a format and load everything up again. It's the only thing I can think of to do, other than use another program which I don't want to do for various reasons. I find maemo mapper to be way overkill for my purposes...