Does Rapid ScriptUI include elements and properties new to CS4?
Yes, we tried to include (and I think we were successful) all elements (tabbedPanel, tab, Node for TreeView) and properties (such as TitleLayout, Opacity for dialog, toggle for Iconbutton etc..). However if creating dialog for CS3, it is possible to set in Options menu that only elements and properties that are compatible with CS3 should be created. Also at time that file is uploaded to website it is important to select CS3, so that a CS3 dialog is compiled and created.