Hi there, happy 4.1 user, up to 20/07/2019 it works very well (I've .gcode file from this date, printed with satisfaction). Yesterday launched 4.1 AppImage, GUI does not start, blank white window with title and small gray rectangle. Launched from CLI, got these errors: Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element Fontconfig warning: