- Icon previews for Images were created always for old files, which made browsing (menus) incredible slow. Added a minor change in the flow, so icons only get created when the user invokes loading images. Andrea; you might check this, probably not al cases are covered yet? - Compositor: the 'File Output' node now has a min/max frame for which it writes files - Compositor: fixed a very bad bug (even in 2.42a release) that made the depsgraph for nodes not work... while editing, only the nodes that change should be recalculated, but accidentally all of them were done each time.