Ok, this does work but once you install the add-on you have to install a back end, by following the install guide in the Scrapbee help. Follow instructions carefully. This is not an addon that installs with one click.

To save pages, right click on the web page, choose Scrapbee menu, choose capture Page. Also the Scrapbee option "Capture URL" does not save the page locally, it only saves a bookmark to the URL in the Scrapbee window. If you want to save a page locally use "Capture Page".

After you do a "Capture page" to a local file a window will pop up showing each element that was saved. Click the "Done" button to close that popup window.

To verify you have saved the page locally, make sure the Scrapbee sidebar is open, click once on the page name in Scrapbee. Look in the browser URL bar. The URL should start with "localhost:" if the page is saved locally.

Also if you look where your setup our RDF file location in Scrapbee settings, under the "data" folder you will see more folders with a long number. These folder names begin with the date in YYYYMMDD format and the rest is likely some type of time stamp.