I'm having some major issues getting Grav working, and I'm really not sure what the issue is.
Installed the "Core + Admin" version - for some reason, whenever I try to navigate to the main index page (site/blog/) - it just redirects to /blog/admin and shows a blank screen. The first time I tried this, I got the "problems" page, but after that I could never get that page to show up again, even after removing everything and starting over. No errors reported in PHP error logs.
Installed one of the skeletons - navigating to site/blog/ gives me a 500 server error. The error logs say: " Uncaught exception 'RuntimeException' with message 'Please run: <i>bin/grav install</i>'" - tried running ./bin/grav install but that just gives me an error "require_once(/var/www/site/public/blog/bin/../vendor/autoload.php): failed to open stream: No such file or directory in /var/www/site/public/blog/bin/grav on line 21".
Running on Apache 2.4, PHP 5.5.31, Ubuntu 12.04. I did chmod 755 and chown www-data:www-data to everything, but tried all kinds of different sets of permissions/owners with no change.