When it tells you that session verification failed, I think it's referring to your current login state at the forum, as a separate matter from the Admin area, package manager, etc. I've gotten that a few times, and it's never lasted very long. I can't remember how I resolved it, but I think the one thing I've never done is the one thing it suggests: log out and log back in. However, it is something to try. Also make sure you're not blocking cookies. The things I probably did were: 1) when you get that message, instead of doing something different, just refresh that same page, maybe even a few times, and 2) browse to a couple more pages. Then if you're not already logged in, try logging in.
I'll go see what I can find in package manager about your other questions...
Ok, localhost and port 21 are correct.
Your username and password would be your cPanel/FTP ones, not your forum ones.
So I suspect it should work ok once you get past the "session" issue. As I recall from posts in the SMF community forum, SMF only uses "sessions" (which are a substitute for cookies) for the first few pages you visit in the forum. So, before you try to log in or go to the Admin area, browse to several of your forum pages.
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After you upgrade through package manager (outside Fantastico), Fantastico (when it learns that 1.1.8 is available) is going to complain and possibly send you an email that your SMF version isn't current.
When you get that warning (but not before), use cPanel > File Manager to browse to public_html/forum (or your forum home directory).
Find the file fantversion.php, and Edit it. You'll see that it's just a text file.
Change the version shown to 1.1.8. That will make Fantastico happy.
The reason you should not edit that file until you get Fantastico's warning is that it thinks the current version is 1.1.7. If you change it to 1.1.8 now, it will detect the mismatch and send you a warning. It's not smart enough to know that 1.1.8 is later than 1.1.7. It only knows that they aren't the same.
This post has been edited by SteveW: 30 March 2009 - 06:23 AM