I've been using b2evolution for a couple years now, so I know my way around, somewhat. Needed to post yesterday, and when I attempted to login, I got a 404 error.

The redirects appear to no longer have the directory slash between the name of my htsrv directory and the login.php file. Here's what I get in my site's CGI error logs:

PHP Fatal error:  main() [<a href='function.require'>function.require</a>]: Failed opening required '/hermes/web03/b382/pow.danchrist/htdocs/blogs/htsrv.oRY6zOlogin.php' (include_path='.:/usr/local/lib/php-4.4.4/lib/php') in /hermes/web03/b382/pow.danchrist/htdocs/blogs/inc/_main.inc.php on line 650

PHP Warning:  main(/hermes/web03/b382/pow.danchrist/htdocs/blogs/htsrv.oRY6zOlogin.php) [<a href='function.main'>function.main</a>]: failed to open stream: No such file or directory in /hermes/web03/b382/pow.danchrist/htdocs/blogs/inc/_main.inc.php on line 650

I haven't made any changes to the b2evolution files in months.

What could cause this, and how can I fix it?

Thank you.