Hi Christian,

I would take a look at the /data/umbraco.config file. This is where Umbraco stores the published data. The rootnode of your site must be the first childnode. Also check that the network service account of your host can read and write to that file.

Cheers,

Richard

Thanks,Richard.

Turns out that the umbraco.config file doesn't exist.

I then tried to copy the file from a backup (knowing that it does not contain the latests datat). Still not workning - and the file dissapears when I republish the site.

Umbraco should automatically recreate the umbraco.config if there isn't one.  Did you check the permissions?

I would have thoght so too :) Yes,the permissions are correct. Even gave the network service full control. 

I guess something goes wrong when umbraco tries to generate the file and that it could be due to wrong or missing references between the documents in the database.

What do you mean with Missing references? Do you get errors when you open a document in Umbraco?

By missing references I mean e.g. a node with a reference to a non existing parent. But it doesn't seem to be the case.

I can open, create, edit documents in Umbraco.

See http://our.umbraco.org/forum/developers/api-questions/5094-Umbracoconfig-not-created

Hello,

I know it's an old issue but today happened to me as well.
It's a permissions problem and I am 100% psossitive. Websiste has a couple of thousand articles, everything was working fine until the no nodes splash screen comes up. I just logged in and republish the entire site and everything was back in order. I checked the windows server logs and I got this message

Message: Access to the path '...........\App_Data\umbraco.config' is denied.

The question is why this happened? A first thought is that for some reason another process already was using that file and couldn't be created again. 

Any ideas guys?

Thanks, Giorgos

is working on a reply...