the most recent version of Free Tools is 1.1.2, it should be available for download from your account.
log into your account, on the MyAccount page, browse to the download section, it should be available there.
if you don't see it in your account, you can always add it to your account from the free told page:
make sure to uninstall the previous version from the extension manager before installing the newer one.
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.