When I went to update my Jetpack plugin to version 1.3, the installation failed. Now, I can't re-install the plugin because "the destination folder already exists" (the message I get). I'm using the latest WordPress version, 3.3.2. I have FTP access, but I can't delete the old Jetpack folder/files because "I don't have sufficient permission." Ugh.
How can I fix this? Any help appreciated.