CMS always runs. Never turn that off. SO many other functions to making sure DS runs right are tied into that service. Reimporting Meta Data is installing over 100 5Mb files. Until DAZ gets the zips out no way will I do that. Again, too time consuming.
There are many things that can cause a service to stop or fail to start, most of which are sporadic glitches. If your Content Library tab shows nothing under Categories, the CMS service has stopped or is being blocked from communicating with DS.
You don’t need to reinstall anything. If the CMS is running but nothing is showing in Smart Content, go to the Content Library options menu, “Content DB Maintenance > Re-Import Metadata”.