For some reason I cannot edit any of my posts or pages. I have tried in Firefox, IE, and Lynx, but all I get is a blank page when I try to bring up the edit screen.
I can access post-new.php but post.php and page.php do not work when I try to use the edit action. I can post entries, and I can delete entries, but I cannot edit them. (The same for pages.)
The rest of my WP installation is working fine, and this was fine until recently, so I have no idea what the issue is.