Chrome 24 breaks the use of animations in GWT 2.4 compiled code. If Google truly backs both of these products, they'll hopefully issue a Chrome patch ASAP. For more information see http://code.google.com/p/chromium/issues/detail?id=158910
As the trials of life continue to take their toll, remember that there is always a future in Computer Maintenance. -- National Lampoon, "Deteriorata"