Hey all! So I finally resolved my issue, without having to completely reinstall my site, plugins and such (well, I did that as part of the troubleshooting, but I’m hoping this resolution will help at least a few people to avoid all of that trouble).
The problem was, apparently, that one of my plugins had corrupted the user roles definitions stored in the wp database. The table is wp_options (where “wp_” matches your table prefix) and the field to search for is wp_user_roles (again, “wp_” should be changed to your table prefix).
The default roles are here: wp_user_roles. This link is from 12/2011, so if someone has a more recent link, or better yet a link to the wordpress codex that houses this information, please provide it here to help out others.
I simply had to copy and paste the values in the above link into the corresponding field in my wp_options table, and I was able to login again.
Please post if anyone else finds this useful, or if someone has any other suggestions for people facing this issue.
Hope this helps! ??
