Support

Mandatory information about my setup:

Have I read the related troubleshooter articles above before posting (which pages?)? Yes, section on upgrading Joomla core
Have I searched the tickets before posting? NoYes
Have I read the documentation before posting (which pages?)? Yes - section on upgrading Joomla core
Joomla! version: 1.5.26
PHP version: 5.2.17
MySQL version: 5.0.86
Host: Midwest Marketing
Admin Tools version: 2.2.5

Description of my issue:
I tried to use the automatic updater to update Joomla! to 1.5.26, but got a "ERROR: Invalid login" alert. I then used Sam Moffat's update manager to update Joomla!

The AT updater has worked previously and works on another site set up the same way on the same host. Updating AT works as well. The error message appears regardless of whether I have set AT for direct file writing or for FTP uploading. The tmp directory is 755 and again, has worked previously.

Thanks. The Admin Tools directory is 755. I tried setting to 777 for testing purposes but it didn't make any difference. I've also tried with Safari as well as Firefox, from several different internet connections with no difference. Also, the error appears before anything has been downloaded. Any idea where to start looking for a cause for a network or browser error? Any other troubleshooting steps to take?

I'm quite sure the ftp settings are correct, and the behavior is the same whether I choose "Write directly to files" or "Upload using FTP."

There may be something else set wrong- when I try to remove an IP address from the Auto IP block list or Site IP blacklist, I get a 403 error. I have run the Fix Permissions and Repair and Optimise Tables tools multiple times to no effect.

That fixed the 403 problem, but not the "Invalid login" error :-(