Quote Originally Posted by bplex View Post
Actually, you can also get that error if you upload the files from vShare 2.8.1 and overwrite the config.php file with the default blank one that comes with vShare 2.8.1. Check to make sure that your original config.php file is intact.
Confirmed, i got the same message on my test site when i used the upgrade option with the same version of vshare 2.7 that i did the flash install with.

I will open a ticket for when i ready to upgrade on my production site.