Hi Tracker users,

Tracker 6.0.2 is here and is very highly recommended. Important changes and bug fixes are:

--You can now open and export videos as zip files containing sequential jpg or png images.
--The CircleFitter tool can now calibrate the scale to its radius and set the origin to its center.
--Angular variables work correctly in Model Builder

To upgrade, click the green "Now available" button on the toolbar and choose Upgrade Now. If you don't see the green button choose Help|Check For Upgrades.

Once again, you will need to use a full installer to upgrade (upgrade installers will be available for future versions). Installers for Windows and MacOS can be downloaded from both the Tracker home page (http://physlets.org/tracker/) and ComPADRE (http://www.opensourcephysics.org/items/detail.cfm?ID=7365).

Thanks! Doug