Printing score pages (with or without annotations) may come out as blank pages due to a problem with memory management. There is no known workaround at the moment.
User Guide and other other web page links within Variations do not launch under Mac OSX 10.5 (Leopard)
On Mac OSX 10.5 (Leopard) when the Variations application tries to launch a web page, either as a result of a link or menu item, the page will only display if the default web browser is already running. Therefore, the workaround to this problem is to make sure the default browser is running when using Variations.