Array in footer display all variations

Suddenly have a problem.. the plugin display in the footer some a array // variation information in the footer

> When I disable the plugin everything goes well

I was in a testing phase of this plugin before buying… please help !

Array ( [2549] => 9.9 [1824] => 9.9 [1827] => 9.9 [1829] => 9.9 [1830] => 9.9 [1831] => 9.9 [1832] => 9.9 [1833] => 9.9 [1835] => 9.9 [1836] => 9.9 [1837] => 9.9 [1838] => 9.9 [2150] => 19.9 [929] => 9.9 [1963] => 9.9 )