Please check the kaltura.category table and make sure the categories are there and the status is 2, assuming this is so, yes, run /opt/kaltura/bin/kaltura-sphinx-reindex.sh.
Great, glad we’re good. BTW, I just released 12.4.0 as stable. If memory serves, you were interested in using Nginx’s RTMP module for live streaming. This is now possible.
For more info, please see: