Arkadaşlar bir WP plugininde hata lıyorum ...

Adı : Ad-minister

Hata

Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/content/79/7301279/html/wp-content/plugins/ad-minister/ad-minister-functions.php on line 601

Warning: Invalid argument supplied for foreach() in /home/content/79/7301279/html/wp-content/plugins/ad-minister/ad-minister-functions.php on line 601

No data available.

601. Satıda ise : foreach (array_keys($contents) as $i) {

Nasıl düzeltebilirim bu hatayı :S ?