Errors after WordPress update

I did the wordpress update the other day from within my wordpress dashboard. I have noticed two problems since. I am using Woo Themes, Bueno.

1. When I click links from posts posted prior to the update I get the following warning message: Warning: _() expects exactly 1 parameter, 2 given in /home/content/98/7899198/html/theprimalparent/wp-content/themes/bueno/404.php on line 11

The posts themselves are not broken, though, just the links.

2. The share counts of my facebook and twitter share buttons have been deleted. Where there were hundreds before there now are zero.

I did not update wordpress from within my hosting account so I cannot easily restore my website prior to the update.

Can anyone help me? Does woo themes have an update for Bueno that might help?

Thanks a lot!