This evening I was writing out a blog post and went to insert some coding and noticed it was already in the HTML tab. I attempted to switch it the visual tab so I could continue working but my editor will not change from the HTML mode.
I have searched for a fix and tried everything from upgrading (I upgraded to 3.4.1 tonight), disabled all plugins, deleted & reuploaded the wp-admin & wp-include files.
I'm not sure what else to do to make it work? I have a second installation of WordPress on my server linked to a different domain and that one is working fine. I don't know when I started having this problem as I haven't blogged on this WordPress install in sometime, but I haven't changed anything on the server or uploaded anything since I started blogging again aside from upgrading.