Hadn't thought of that. I'll do an uninstall and reinstall and see what happens.
EDIT: Apparently the last update to Win10 borked both apps. I haven't used either one in a while so didn't notice until now. Uninstalled and reinstalled both and a reboot. When I installed the iconpack all went well. I applied it and it took a while. Then my wallpaper and taskbar vanished. Pressing the win key brought up Win10's screen capture. How that happened is beyond me. CTR-ALT-DELETE, sign out then back in again. solved that. I'm not calling this solved yet for the above reason.