Chris Are those "some" nodes perhaps those you used already before for viewing the admin UI? If so, we fixed the underlying Caching-Issue with the upcoming 4.2.1 Release (https://issues.apache.org/jira/browse/SOLR-4311)
Otherwise, what's the definition of "some" in your case? When does it work, and when not? Assuming you're using the same OS/Browser in both cases .. what's the difference? one a master, the other one(s) slave(s) - for example? Stefan On Friday, March 29, 2013 at 9:28 PM, Chris R wrote: > I've notice on the Admin UI that on some of my nodes that Core Selector > combo box doesn't populate. Known issue? > > Chris