Just tried to update the installation from Extras Testing using the app manager, and got an error. Uninstalled the game, and still getting the error when trying to reinstall from scratch:

Unable to install 'OpenTTD'
Application packages missing: openttd-data(=0.7.4-1maemo2)


Curiously I have no /media/mmc2/share/openttd because I have no /media/mmc2 (just a /media/mmc1, which is empty).

This is making me worried now