I have BaseX 8.2.1 running on Mac OS X 10.10.3 Yosemite, BaseX GUI.app, release channel. My computer has a 2.2 GHz Intel processor and 4 GB of RAM. My problem is that I have tried all the standard ways to quit BaseX, but BaseX stubbornly refuses to quit; it only closes the active windows. Is there anything I'm doing wrong, or is this a bug?