2025-10-03, 08:08 PM
I have this same issue. In 10.10.7 I can add libraries without issue. In 10.11 RC 5 and 6 the first one usually works but a second just ends in circle spin of doom. It eventually adds the library if i leave it alone but if I try to do anything it will crash the service. The last few times I tried adding a library, it did the spin of doom and added the library twice putting a "2" behind the second one.