For Mac OS 10.6 through 10.11
The driver should automatically download when you install LeapFrog Connect.
Restarting your computer will reset the driver and may resolve the issue.
If it does not, you may download the driver by clicking the attached file below.
https://lfccontent2.leapfrog.com/cs/utilities/LfConnectDriver.pkg
To install the missing driver, save the attached pkg file to the desktop, double click it and run the LfconnectDriver application inside it. Follow instructions on screen and restart your computer when complete.
If this doesn't resolve the issue, open the PDF file under "Attachments" on the right side of this page and try the steps in that document to update the driver.