Unable to edit Home Page
After you login, try navigating to the Dashboard directly.
I hope this helps,
Follow johnpaul's approach to get to the dashboard and then navigate to full sitemap, click on the home page and select versions. Try reverting to an older version of the page and see if this brings back your edit bar!!
Note: If this happens in all the pages, then you might need to check your themes footer.php whether it includes
<?php Loader::element('footer_required'); ?>