Version 2.5 of the ANT Library Package for Mac OS has been released, and it is available in the ANT+ Adopter Zone.
This version adds IOKit support for USB1 sticks, removing the requirement for 3rd party drivers.
We recommend Mac applications use ANT MacOS package v2.5 or later, which supports both USB1 and USB2 sticks through IOKit, and supports 64-bit systems.
