Upgrading Drupal

I was about to update the modules Context and one other. I had to fill in the FTP access, the it was canceled because it could not create a proper folder. And now I can not get on the site, ftp-login works. What could have happen, something with maintainace mode?

Hi All,
I am getting messages suggesting i update to 7.18 wheni am on 7.2?

NAME INSTALLED VERSION RECOMMENDED VERSION
Drupal core (Security update) 7.2 7.18 (Release notes)

Is this correct?
Thanks

After upgrading from d6 to d7 I am getting this message:

Notice: unserialize() [function.unserialize]: Error at offset 99 of 139 bytes in UserController->attachLoad() (line 307 of /var/www/html/modules/user/user.module).

How to solve this please?

I was recently doing a fairly routine security update on our website (www.pittsfieldtv.org/web), when I (as a novice administrator) broke several cardinal rules. I updated to our main site instead of a test site, and I accidentally nuked our .htaccess file, which I cannot locate the backup for. As a result, the site has become a bit of a mess, and being a neophyte, I would very much appreciate help pulling this one out of the fire.

Here are the issues I've discovered:

- First, and of note, the website is being hosted by 1&1 under the Business plan. It's an inexpensive option for this non-for-profit website, and it suits most of the site's needs. However, it does generate some complexities which may need to be accounted for.

- The site's home page works flawlessly - it looks exactly as I'd expect it to. This is the only thing that works as expected.

- When I click on a navigation link on the site itself, I see the following "Error 300:"

Multiple Choices

The document name you requested (/index.php) could not be found on this server. However, we found documents with names similar to the one you requested.
Available documents:

/index.htm (common basename)
Please consider informing the owner of the referring page about the broken link.

I had a problem with a v6 website and found it necessary to export the database through phpmyadmin and then reinstall a v7 site. My problem is I cannot figure out how to migrate the sql data back into the new v7 site. Any ideas would be appreciated.

I am getting tthe following when attempting to upgrade version 7 minor upgrades. From 7.12 to 7.18;

Notice: Undefined index: highlighted in include() (line 126 of /var/www/modules/system/page.tpl.php).
Notice: Undefined index: sidebar_first in include() (line 138 of /var/www/modules/system/page.tpl.php).
Notice: Undefined index: sidebar_second in include() (line 144 of /var/www/modules/system/page.tpl.php).