[Plugin: Shortcode Manager] How to keep [sb name="My Shortcode"] from formatting?

Hello,
strangely enough, in my current installation this shortcode manager produces an odd formatting of the code:
[sb name=”My Shortcode”]becomes
 My Shortcode</p><div class=”shortbus”></div>
in html, producing a line break after the shortcode.

Anybody knows what’s wrong with this?

Thanks!

http://ww.wp.xz.cn/extend/plugins/shortbus/