After the facebook plugin stopped working lately I managed to get it to work via the suggested code change mentioned here
However, I'm now stuck, because the plugin wants me to "grant access rights!" again. Whenever I click that button wordpress takes me to a page that says "You do not have sufficient permissions to access this page.".
I know this page. I got there when wordpress wanted to change something internally but my folder was owned by the root user. Now the correct folders are owned by the server and I even tried making all files and folders owned by the server. I can edit theme code from within the wordpress, this should prove that the permission are there, right? So why am I seeing this page and what can I do to grant the rights to facebook again so my posts appear on the wall again.
Thanks so much for any help.
PS: The user has the write and execute permissions on all the files...