This issue exists for users on Mac computers running OS X 10.11 (El Capitan) who are also running an obsolete version of Logger Pro.

Old releases of Logger Pro (version 3.10.1 and older) as well as the current release of Logger Lite (version 1.8) do not communicate with LabQuest Mini. Communication with LabQuest and LabQuest 2 works normally.

Update to the current Logger Pro release to fix this issue.

Logger Pro versions 3.10.2 and newer do not have this issue. You can download the current version at
https://www.vernier.com/downloads