Magento upgrade via Magento Connect fails

I tried to upgrade our shopsoftware from Ver. 1.3.2.3 to 1.4.1.0 and I used the Magento Connect Manager. It loads all the files and said they has been installed, but they are not. Under “downloader/pe开发者_如何学Carlib/download/” are all these files. Have I forgotten anything or is that maybe a bug in our customized shopversion?

I’m searching for days and hope, someone can help me here.

I'm in your shoes as well. I've got an upgrade to do as well, and trying to do it automatically didn't work out well at all.

Here's the only upgrade path I've gotten to work:

1. Install a fresh copy of 1.4.1.0
2. Backup 1.3.2.3 via Magento
3. Move media files from 1.3.2.3
4. Bring skin over, convert to 1.4.1.0's new requirements
5. Bring modules over - turn error reporting on, and check for issues (there were a ton with ours)

Good luck. I'm still having some issues with ours :(