Hello,
Sorry for the delay in getting back to you.
You can download a copy of the amended plugin from this address.
You’ll need to log in to your server via ftp or SSH and locate the google-adsense-plug-and-play directory. Go in to this directory and download a copy of that file as a backup. Replace it with the file in the zip you’ve just downloaded and everything should magically start working again.
I’m afraid I don’t have the time to help you further than this: if you need more detailed instructions, see if you can find a friendly server guru to help you out 🙂
Bit of a typo on line 82 – delete the ‘C’ before the curly brace and it starts working…