<?php $this->widget('ext.yii-facebook-opengraph.plugins.LikeButton', array(
//'href' => 'YOUR_URL', // if omitted Facebook will use the OG meta tag
'show-faces'=>true,
'send' => true
)); ?>
Sorry it took so long to fix this, but thanks very much for letting me know. It's fixed on GitHub now and I'll be pushing the updated code to the Yii site soon too.
<?php $this->widget('ext.yii-facebook-opengraph.plugins.LikeButton', array( //'href' => 'YOUR_URL', // if omitted Facebook will use the OG meta tag 'show-faces'=>true, 'send' => true )); ?>
show-faces
should be
show_faces