Mac basecamp ejects GPS

My new Garmin etrex 22x unintentionally ejects the Garmin and the sd card when connected to basecamp. I get the message my disk was not properly ejected. This occurs just after the etrex wheel stops spinning in the upper left of basecamp. This problem does not occur when connected to Garmin express. This problem occurs on two different computers that have basecamp. The problem started after an all night download of TopoActive Europe.