I have enabled this and have both .htaccess files and htaccess.txt files. And now apparently an htaccess.bak file. I ensured the mod_rewrite permissions were in place, as well, and asked my host.
My forum still will not work without the "/index.php", and it's running on Apache. I'm not sure what the issue is at this point. Any help? And I have looked through various threads, all which did not help. Thank you!