If you want to try and manually force the miner configuration (pool / worker / password) here are the steps. If something on the controller is corrupt then this may not work. This is only a last resort. I'm assuming you aren't familiar with nix shells from what you said in your first post.

You'll need to ssh into the miner. If you aren't working from a linux or mac, you'll need Cygwin or some other way of running a bash-like shell.
The username is root and the password is admin (unless you have changed the password)
*enter password*

Change to the config directory

Stop bmminer

Change permissions on bmminer.conf so we can edit it manually

Edit the file using vi

Use arrow buttons to go to where you edit text, press "i" and edit the text. If you get stuck using vi just google it—unfortunately there isn't any other editor installed. When you are done editing the pool and worker info, press escape, then colon and type "wq" (which mean write changes and quit vi) and enter.

Change permissions back to original state on bmminer.conf

Start bmminer


See if this gets your pools and workers back