Webot 6.1.5 is available for download for Linux 32, Linux 64, Mac OS X
and Windows. This new version fixes a number of bugs (with ray-
cylinder collision detection, Python 2.6, Mac OS X 10.4 compatibility)
and introduces several improvements in the robotstadium simulation
environment. All the users of Webots are recommended to upgrade to
this new version. The complete change log is available here.
http://www.cyberbotics.com/cdrom/common/doc/webots/ChangeLog.html