Thanks, indeed that is a bug in vbWiki Std. It is something that was left from vbWiki Pro.
Please open arcane_vbulletin_core.php and find this line:
PHP Code:
$phrasegroups = array( 'vbwiki' );
And replace it for this:
PHP Code:
$phrasegroups = array();
Since vbWiki Pro reuses most of the code from vbWiki Std, the piece of code mentioned above was left in vbWiki Std, while it shouldn't have.
I have updated the download on the first post.
Thanks.