I get very similar errors whenever I try to do anything on my dashboard (look at Plug-ins, go to Appearance, etc). I’m using an FTP. I have tried deleting the offending plug-in and reinstalling it, without luck. Perhaps I am confused by this:
You might want to delete the wp-admin folder and upload that folder.
I need to delete the wp-admin folder and then upload *which* other folder?
Any advice?