Some nm-connection-editor *.ui files do not exist (impossible to set Wi-Fi Security settings in NM)

Hi. Noticed that i can't change "Wi-Fi Security" settings in nm-applet.
I launched nm-connection-editor in console and got following errors:

Code:** (nm-connection-editor:2973): WARNING **: 21:29:38.531: Couldn't load UI builder resource /org/freedesktop/network-manager-applet/ws-wep-key.ui: The resource at ?/org/freedesktop/network-manager-applet/ws-wep-key.ui? does not exist

** (nm-connection-editor:2973): WARNING **: 21:29:38.543: Couldn't load UI builder resource /org/freedesktop/network-manager-applet/ws-wep-key.ui: The resource at ?/org/freedesktop/network-manager-applet/ws-wep-key.ui? does not exist

** (nm-connection-editor:2973): WARNING **: 21:29:38.543: Couldn't load UI builder resource /org/freedesktop/network-manager-applet/ws-wpa-psk.ui: The resource at ?/org/freedesktop/network-manager-applet/ws-wpa-psk.ui? does not exist

** (nm-connection-editor:2973): WARNING **: 21:29:38.543: Couldn't load UI builder resource /org/freedesktop/network-manager-applet/ws-sae.ui: The resource at ?/org/freedesktop/network-manager-applet/ws-sae.ui? does not existAlso, as a result, newly created Wi-Fi hotspots (files in "system-connections" directory of NetworkManager) have "[wifi-security]" block missing.

Would be nice if it'll be fixed.
Thanks in advance.

PS: Slackware-current, 32-bit.