I did the routine upgrade to version 2.2.2 but something has gone wrong. I've upgraded before with no trouble. I followed all the upgrade instructions EXCEPT backing up all my files. :(
After upgrading I tried to run the upgrade script but it told me I was already using the most current version. My blog appears okay except when trying to write a new post. Where I used to see the upload images area I get the following message:
An appropriate representation of the requested resource /blog/wp-admin/upload.php could not be found on this server.
I tried deleting and reuploading the wp-admin folder. I then deleted and reuploaded all files. I then deleted the original downloaded upgrade files, redownloaded them fresh and did it all again. Same problem. I also noticed that after deactivating all my plug-ins before the first upgrade, they are all listed as activated without my activating them, yet wordpress is treating them as deactivated.