[kehlers]

Well, your guess was correct! Your tip got me to thinking about cookies – I’m a little rusty on my setcookie() syntax! Anyhow, I decided to install WordPress, even though I don’t need it just now, because if I could get that to integrate across directories, then I could surely do what I’m hoping for with the gallery.php page.

That helped me to understand the interactions of the cookies and directories and domains. All that to say, I was able to get it to work using the following in config.php:

$bb_cookiepath = "/";

$bb_cookiedomain = ".mydomain.com" ;

I believe that if cookie domain is not specified, then it will default to be the root of the directory in which the script is running, i.e. mydomain.com/forums/, making it unavailable to any other directory, including parent directories. You probably already knew that, but just putting it out there in case someone else has the same issue.