I put on single.php
<?php echo wpp_get_views( get_the_ID() ); ?> on single.php
and on the sidebar.php
<?php wpp_get_mostpopular("range=weekly&limit=15&order_by=views&stats_views=1&stats_comments=0&wpp_start=' '&wpp_end=' '&"); ?>
the views count is different from its post and that shown at the sidebar.
than i figure it out, that its error only at the post that older more than a week which it still shown on the list.
did i miss some thing?