Pre-migration problem

Hello, I'm new to this forum, som I'm not really sure if I'm posting in the right place.
Anyway, I'm trying to upgrade from gallery v.1,5x to 2.2. I'm following this (http://codex.gallery2.org/Gallery2:migration) guide. But I encounter a problem with this step:

"Reconfigure your Gallery v1 install to reflect the folder change by going to http://www.example.com/g1/setup/ Alternately, edit your 'config.php' and '.htaccess' so that your gallery will work in the new location. "

When I go to /g1/setup i get this message:

"Warning: mkdir(/hsphere/local/home/ohgno/ohg.no/gallery/albums/.users): No such file or directory in /hsphere/local/home/ohgno/ohg.no/g1/classes/gallery/UserDB.php on line 43 Error: Unable to create dir: /hsphere/local/home/ohgno/ohg.no/gallery/albums/.users
Upgrading Users
The user database in your gallery was created with an older version of the software and is out of date. This is not a problem! We will upgrade it. This may take some time. Your data will not be harmed in any way by this process. Rest assured, that if this process takes a long time now, it's going to make your gallery run more efficiently in the future.
If you get an error, and only some users are upgraded, try refreshing the page to upgrade remaining users.

Please Wait... Fatal error: Call to a member function on a non-object in /hsphere/local/home/ohgno/ohg.no/g1/classes/gallery/UserDB.php on line 341 "

Does this mean that the gallery is fixing something and I'll just have to wait, or do I have to do something? It's been like this for about 1 1/4 hour.

I really appreciate your help!