When trying to start wxmaxima on a ~AMD64 system I get the following error: $ wxmaxima terminate called after throwing an instance of 'std::runtime_error' what(): locale::facet::_S_create_c_locale name not valid Aborted This did not occur in the previous version. My locale is: $ locale -a C C.utf8 en_GB.utf8 POSIX which should not cause any issues. Reproducible: Always