Fixed it. They forgot to put the string in quotes.
Change
$_stversion=7.0.1;
to
$_stversion='7.0.1';
on Line 34 of the sharethis.php file (if you have access).
Just updated from 7.0 to 7.0.1
My site is still running, but I got the same error message and it won’t let me Activate the ShareThis Plugin.
Not cool guys…
