Here is what I did to fix the sizing issues for 4.0.6:
1. Find the following code in SHOWTHREAD:
Code:
<vb:if condition="$show['fb_likebutton']">
2. After that line insert your Twitter button code:
Code:
<vb:if condition="!in_array($GLOBALS[forumid], array(21, 22))">
<div id="mytweetbutton" align="right" style="height:15px;">
<a href="http://twitter.com/share" class="twitter-share-button" data-count="none" data-via="crowzacom" data-related="EdCrowza">Tweet</a><script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
</div>
</vb:if>
3. Make sure you replace the correct variables, per the original instructions (I also added the 'data-related' option for it to recommend more than one Twitter account). Notice, the height is set to '15px;'.
If you do that, it should look like the attached image: