On OS X 10.10 ``Yosemite'', clicks on toolbar icons could cause Aquamacs (as well as GNU Emacs 24.4) to become unresponsive. Until Apple releases an improved version of the operating system, Aquamacs provides a workaround.
Color dragging out of the color palette (and other drag&drop actions) right after startup now works reliably.
Color dragging to set colors of the fringes in a window works again.
The size of LaTeX previews on Retina displays has been corrected. For convenience, Aquamacs will no longer ask whether to ``cache the preamble'' (who knows what that entails anyway?).