Unsupported File Type (pdf) – WP 3.5 and GDE 2.5.1

Hi;

It works perfectly until few days. Now I have this error:

Warning: implode() [function.implode]: Invalid arguments passed in /home/content/59/8672159/html/wwwbeasain/wp-content/plugins/google-document-embedder/functions.php on line 165
GDE Error: Unsupported File Type (pdf)

This is the shortcode:
[gview file=”http://www.bealak.com/20121206_ZallaBalmasedaZalla.pdf”%5D

Thanks!!!!!!

http://wordpress.org/extend/plugins/google-document-embedder/