the current version 1.1.2 is the one you should be using.
where the menu items are not working, it suggests the web assist installer did not run.
uninstall free tools from the extension manager, then install it again.
after you install the new version, when you open DW, it should launch the WebAssist installer. if the WebAssist installer does not launch automatically, open a php file to force it to launch. after the WebAssist installer completes, make sure to restart DW.