Upgrading Drupal

I've the following problem after installing i18n module. When I open the start page of the site the following message displayed (and nothing else):

warning: call_user_func_array(): First argumented is expected to be a valid callback, 'taxonomy_term_page' was given in /usr/local/stuff/web/icebrains-soft/html/includes/menu.inc on line 354.

I have no access to the drupal interface. I can't understand the cause of this error. It appears after drupal configuring via "Settings" page.

How can I avoid this problem?

Thanks a lot beforehand.

I recently upgraded my site to 4.7.0 RC3 and I think most of the upgrade process went smooth.
Only the updates of the image paths in the nodes seems not to have occurred. This page is a good example:
http://www.tortels.be/infobundel/wie_is_wie/welpenleiding
On the left are some images lost. Their path is still image/view/374/thumbnail, the old path when the base href was still there...
Is there anything I can do about it?

I don't want to duplicate my post: http://drupal.org/node/59540
Please read my original thread. I really need help.

Thanks

meinolf

I have lost some accented (swedish) characters from my site, they are replaced by question marks.

it is only in some few nodes this has happened. The same characters is fine in other nodes.

Since I recently upgraded to 4.7rc3, I suspect this may be the reason. But it is possible that the problem is caused by something else.

This post - http://drupal.org/node/56112#comment-109880 - suggest that pre4.7-databases need to be converted.

Hi im pretty sure no emails are being sent to new users on my site.

Ive written a little test script which checks the mail() function is working.

Can anyone please help me in my further testing.

Im not sure how to send a test mail through drupal (other then register as new user) - and is there a log or something which would record the failure to send a mail..?

thanks in advance

Yesterday I've update my site from 4.63 to 4.7-rc3.
First I've make a backup of my database with mysqldump.
Then I replaced all Drupal files in my web directory.
Then - login as admin - run the update.php.
After that I seems 4.7 run.
Under settings site maintenance I switch to the offlline mode. I know theres a lot to do before going online.

Offline mode works. You can see it here: www.go-with-us.de.
But it's not possible to login as admin anymore. No error. Nothing happens.