I'm running WP 2.8.4. I wanted to update my plugins, but they fail to upgrade. If I click 'Upgrade automatically', I have to give my FTP credentials. After that, the page is loading quite some time and then, I get the message:
Downloading update from http://downloads.wordpress.org/plugin/google-sitemap-generator.3.1.6.zip.
Unpacking the update.
Kan bestand niet kopiëren /wp-content/upgrade/google-sitemap-generator.3.1.62/google-sitemap-generator/readme-ar_AR.txt
(the last sentence means: cannot copy file ....)
My ftp works correctly. This has worked before, although I don't know which version it was (I think 2.8.2).
This happens with all upgradeable plugins. Can someone help me?