nevermind. thanks everyone for the efforts but i’ve managed to solve this one on my own.
for the sake of the half-dozen other posts i saw go unanswered, let me cut the gordian knot for the rest of you.
the mistake was to upload the entire adsense-deluxe_wp_plugin_v0.8 file into the wp-content/plugins directory. you need to upload ONLY the adsense-deluxe.php file into this directory.
