I just got Beta 8 installed. It went really fast at first. Honestly, I was shocked when after just a few minutes I was almost done. Then I went to my site and... 500 Server Error. Problem? Due to my shared hosting environment, I needed to change the path to my vendor autoload file. The install instructions are great and explain what to do to update other paths in the index.php and flarum executable files, but the instructions don't mention this path. Probably because it is assumed that the person installing Flarum will be smart enough to realize they need to update this path too. But, I'm not that smart. đ
The original path in flarum executable file and index.php file is (if I remember correctly):
../vendor/autoload.php
I simply needed to make it:
vendor/autoload.php
Then I got scared when I was seeing language code instead of actual words. But, just remember as the install instructions say, you have to get to your admin and activate the new English extension.