Import of Applixware files fails on non-us locales
Applixware file (*.as) contains numeric data, including formulas. Gnumeric ignores that Applixware always stores its documents internally in locale C. As soon as locale settings are different numbers with decimals are imported as strings. Formulas raise invalid expression errors because commas are not interpreted as list but as decimal separators.
I've a bunch of as files from an old Linux machine. Now, OpenSUSE LEAP 15.0 uses German locale LANG=de_DE.utf8. This makes import fail. My workaround: start gnumeric this way: (LC_ALL=C gnumeric) from shell.