been using antergos forabout a year now .
I did an upgraded system yesterday after about 2months
rm -f /usr/lib/libmozjs-52.so.0 - did this as it was conflicting
then appeared to upgarde alright was running low on hardisk space so cleared out caches (i think after a reboot but not sure)
then today login to kde ok
but no dolphin or kate installed
the upgrader is missing (pamac i think its called)
run upgrade but none of thenm are kde specific packages.
not sure how to reinstall the updater