Dave Bullis - 2025-10-28

A number of things to try:
unset LANGUAGE
Set LC_ALL or LC_MESSAGES to de_DE.UTF-8

Upgrade to 5.3.1 (GA)

Check you have /usr/local/share/locale//de_DE/LC_MESSAGES/xtrkcad.mo
Or (for GA release) /usr/share/locale//de_DE/LC_MESSAGES/xtrkcad.mo

run
/usr/local/bin/xtrkcad-beta -d locale=3
and post the output
Run
locale
and post the output

LANG contain the setting for all categories that are not directly set by a LC_* variable.
see https://superuser.com/questions/392439/lang-and-language-environment-variable-in-debian-based-systems