I just updated my site to WP 2.9.2 (I think I had 2.9.1 before that... maybe 2.9.0) using the auto-update feature but now I can't edit any of my theme files.
I can only edit the css file that's automatically shown in the theme editor. But when I click another file, such as header.php I get a screen that says "Sorry, that file cannot be edited." I can edit plugins fine though.
Even if I revert back to the "default" theme I still can't edit it... or any other theme (i.e. a theme that isn't even activated).
Activated plugins are: Akismet, All in One SEO Pack, Google XML Sitemaps, SimpleModal Contact Form (SMCF), YAPB Sidebar Widget, and Yet Another PhotoBlog
I saw the discussion here but @Esmi suggested that we create a new thread.
Any ideas as to what is wrong?