Peter Lewis of Stairways Software has released Keyboard Maestro 6.4.1, updating the essential automation utility with a number of bug fixes — there are no feature changes. The update fixes potential crashes when undoing Execute AppleScript actions, creating custom icons, and processing text tokens; prevents time triggers from executing twice due to timer drift; addresses a bug that could partially cancel actions that followed an Exit From Loop; and more. ($36 new with a 20 percent discount for TidBITS members, free update, 24.4 MB, release notes)
Turn Off Filename Extension Warning
In Leopard, Apple fixed an annoying aspect of working with the Finder in Tiger. Previously, if you changed a file's extension, the Finder prompted for confirmation. But since no one has ever accidentally changed a filename extension, Apple thankfully added an option to turn that warning off in the Leopard Finder's preferences. Choose Finder > Preferences, and in the Advanced screen, deselect Show Warning Before Changing an Extension.