I noticed an error in the config.inc.php (and Master Settings).
The "full path" appears as written: /home8/nemdasto/public_html/forums
But actually it's now: /home2/nemdasto/public_html/forums
Could this be my problem?
That is the "Absolute PATH to Main Directory" from:
Control Panel Master Settings > DB, Paths & URLs > Paths & URLs TAB
It looks like at some point your site was moved on Bluehost from one box/directory, to another box/directory.
Confirm that the information you enter in that section, is similar to the information shown on your Bluehost account's cPanel page (see attached image)
If Bluehost cPanel says: "/home2/nemdasto"
UBBT CP setting should be similar to: "/home2/nemdasto/public_html/forums" -- just as you mentioned above.
Make the path corrections and attempt to perform your maintenance tasks again.
