That's not the problem, like I said I got it working already. I just think the detection to check if the file is writeable, doesn't work properly. Otherwise an error would have appeared during the upgrade process.

After changing serendipity_config_local.inc.php manually, to get my blog working again I checked, if S9Y was right, by telling me all the writing permissions are met. All I can see is that apache is only allowed to access and execute this file, but not read it. On our server we work with ACL¹, maybe ...

I have exactly the same problem here, though I am upgrading from 1.3 to 1.3.1. I am always getting into this loop. Everything goes fine without any error message, but on the start-page there is still only the upgrade request message.

I am currently using the standard Serendipity calendar plugin. The plugin works fine, that's not the point. But I have one thing which is annoying me. If I apply the calendar plugin, my blog shows 63 XHTML validation errors . All of this errors are related to calendar plugin. If I disable the plugin ...

judebert wrote:The exclamation point is invalid in URLs. I don't know if we escape it for categories; I know we don't do anything with it for titles.

That can't really be the problem in my case. Because a) it worked before and b) other category names don't seem to work either.

I don't know what you mean by "yield proper URLs". Actually it worked all the time before. So it should be possible now.
When the Blog was moved, my admin did the work in make necessary the changes for me. But as I checked the DB there was already the new path in place. So I don't really think that ...

Somehow my categories don't work anymore. If I click on the category link it refers still to the correct URL, but still the startpage is shown.
If I check the Admin Interface, all the categories are still listed and the rewrite rules are still the same than at the time it worked. It's not a matter ...