It'd mean there's something wrong with writing to the XML cache, I'd suggest checking the permissions of where the Umbraco.config file is (it'll be /App_Data in 4.5.x and /data in 4.0.x).
Also check the umbracoLog table in your database for any errors.
Publish node error
Hi guys, when I publish a page, all the pages in my Umbraco installation disappears.
The "Link to document" field is blank.
Why does this happen?
It seems be an issue, when you have a website with very many pages (more than 1.000)
It'd mean there's something wrong with writing to the XML cache, I'd suggest checking the permissions of where the Umbraco.config file is (it'll be /App_Data in 4.5.x and /data in 4.0.x).
Also check the umbracoLog table in your database for any errors.
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